Liquid Silicone Rubber (LSR) injection molding is a manufacturing process used to produce flexible silicone components with complex geometries, consistent repeatability, and high levels of automation.
In a typical process, two liquid silicone components are accurately metered, mixed, injected into a heated mold, cured, and then demolded. Compared with many conventional rubber molding processes, LSR injection molding is particularly well suited to automated production, precision components, multi-cavity tooling, and applications requiring consistent material and dimensional performance. Dow describes LSR as a two-part silicone material designed for rapid heat curing, while Shin-Etsu notes that LSR systems can automate the process from material mixing through molding.
However, successful LSR molding depends on much more than selecting an injection molding machine.
Part geometry, wall thickness, parting lines, gating, venting, shrinkage, tolerances, material hardness, mold construction, cavity count, and production volume all affect manufacturability and final cost.
This guide explains how LSR injection molding works, how to design parts for the process, how tolerances and shrinkage should be managed, and what determines the cost of an LSR project.
Key Takeaways
- LSR is typically supplied as a two-component liquid silicone system that is metered, mixed, injected, and heat-cured.
- The process is highly compatible with automated, multi-cavity and high-volume production.
- LSR mold design must account for material flow, venting, flash control, parting lines, shrinkage, demolding, and cold-runner design.
- Silicone shrinkage is material- and process-dependent, so it should not be treated as one universal percentage.
- Tight tolerances are possible for selected features, but unnecessary precision increases tooling and process-control requirements.
- LSR tooling may require a higher initial investment than simpler rubber tooling, but automation and multi-cavity production can improve long-term unit economics.
- DFM should be completed before production tooling is manufactured, especially for sealing features, undercuts, thin walls, overmolded parts, and precision components.
What Is LSR Injection Molding?
Liquid Silicone Rubber, or LSR, is a flowable silicone elastomer formulated for injection molding.
Many commercial LSR systems consist of two components—commonly referred to as Part A and Part B—which are metered and mixed before entering the injection unit. After the material enters the heated mold cavity, the silicone cures into an elastic solid component.
Unlike thermoplastic injection molding, where plastic is heated until it melts and then cooled inside the mold, LSR is a thermosetting elastomer.
The basic thermal strategy is therefore different:
The LSR feed and metering system is controlled to prevent premature curing, while the mold is heated to initiate and complete vulcanization.
This processing characteristic enables fast curing and automated manufacturing for suitable parts. Shin-Etsu specifically identifies fast curing, low injection pressure, high-precision molding, and automation as key characteristics of liquid silicone injection systems.
How Does LSR Injection Molding Work?
A typical LSR injection molding process can be divided into several stages.
1. Material Preparation
LSR is supplied as separate reactive components.
The material formulation is selected according to requirements such as:
- Shore hardness
- tensile strength
- tear resistance
- compression set
- temperature resistance
- transparency
- electrical performance
- food-contact requirements
- healthcare requirements
- self-lubrication
- adhesion to substrates
LSR is not one standardized material.
For example, Shin-Etsu’s LSR portfolio includes materials ranging across multiple hardness levels and formulations for food contact, automotive applications, high tear strength, self-adhesion and other requirements.
Material selection should therefore begin with the product’s working conditions rather than hardness alone.
2. Metering and Mixing
The two material components are transferred from their containers using a metering system.
The equipment controls the proportion of the components before combining them in a mixing system.
Color pigment or other approved additives may also be introduced during this stage when required.
Accurate metering is important because inconsistent mixing can affect cure behavior and final material properties.
The mixed LSR then moves toward the injection unit.
3. Injection Into the Mold
The material is injected into a closed, heated mold.
Because uncured LSR can flow into fine features, it is suitable for many small or geometrically detailed components.
This flowability is useful—but it also creates one of the major engineering challenges of LSR molding:
flash control.
If mold shutoffs, parting surfaces, vents, or process parameters are poorly controlled, low-viscosity silicone may enter extremely small gaps.
This means precision mold manufacturing is particularly important in LSR production.
4. Curing
Once the silicone reaches the heated cavity, the curing reaction accelerates and the material changes from a flowable liquid into a crosslinked elastomer.
Cure time depends on variables including:
- material formulation
- part thickness
- mold temperature
- geometry
- cavity design
- processing conditions
Fast-curing LSR grades can support short production cycles, although there is no universal cycle time for every LSR component. Dow and Shin-Etsu both offer LSR grades specifically designed around rapid heat curing and improved processing efficiency.
5. Demolding
After sufficient curing, the mold opens and the silicone component is removed.
Silicone’s flexibility can make it possible to demold geometries that would be difficult with rigid thermoplastics.
This creates greater freedom for:
- certain undercuts
- sealing lips
- flexible ribs
- internal retention features
However, flexibility should not be interpreted as unlimited design freedom.
Excessive undercuts can still:
- increase demolding force
- tear components
- deform thin features
- slow automation
- require manual removal
A DFM review should evaluate both whether the part can physically be removed and whether it can be removed consistently during mass production.
6. Post-Molding Operations
Depending on the product and material system, molded LSR components may require additional operations such as:
- flash inspection
- trimming
- post-curing
- washing or cleaning
- printing
- laser marking
- assembly
- functional testing
- dimensional inspection
- packaging
Not every LSR formulation requires post-curing.
Some modern LSR formulations are specifically designed for applications where post-cure can be eliminated or reduced. Shin-Etsu, for example, provides LSR systems designed without a required post-curing stage for selected applications.
Whether post-curing is required should therefore be determined by the selected material, application, regulatory requirements, and validated manufacturing process.
LSR Injection Molding Process at a Glance
| Stage | What Happens | Critical Control |
|---|---|---|
| Material Selection | Appropriate LSR grade selected | Hardness, properties, compliance |
| Metering | A/B components supplied | Mixing consistency |
| Pigment/Additive | Color or additives introduced if needed | Dispersion and ratio |
| Mixing | Components combined | Homogeneity |
| Injection | LSR enters heated mold | Pressure, filling, air removal |
| Curing | Silicone crosslinks | Time and temperature |
| Demolding | Finished component removed | Tear/deformation prevention |
| Secondary Processing | Post-cure, trimming, printing, assembly | Application dependent |
| Quality Control | Dimensions and appearance inspected | Critical specifications |
| Packaging | Parts prepared for shipment | Cleanliness and traceability |
LSR Design Guidelines
Good LSR manufacturing starts at the CAD stage.
Many problems attributed to molding are actually created during product design.
Common examples include:
- unnecessary thickness variation
- poorly positioned parting lines
- unrealistic tolerances
- difficult undercuts
- inadequate sealing geometry
- uncontrolled flash locations
- impossible insert positioning
The goal of DFM is to identify these issues before mold steel is cut.
1. Keep Wall Thickness as Uniform as Practical
Uniform wall thickness generally improves mold filling and curing consistency.
Large transitions from thin to thick silicone sections can create:
- different curing behavior
- dimensional variation
- deformation
- longer cycle time
- local material accumulation
This does not mean every wall must have exactly the same thickness.
Functional products often require reinforcement or thicker sections.
Instead, transitions should be deliberate and gradual where possible.
2. Very Thick Silicone Sections Can Increase Cycle Time
A thicker component contains more material and generally requires more time for heat to reach and cure the entire section.
As a result, unnecessary thickness can increase:
- raw material usage
- curing time
- machine occupancy
- unit cost
Before increasing wall thickness for “strength,” engineers should determine whether geometry, ribs, material hardness, or higher-tear-strength silicone could achieve the required performance more efficiently.
3. Thin Features Require Flow Analysis
LSR’s flow characteristics allow it to fill relatively fine features.
However, very thin sections can still be affected by:
- flow length
- gate location
- air traps
- cavity geometry
- pressure
- material viscosity
There is therefore no universal minimum wall thickness applicable to every LSR product.
A short thin membrane close to the gate may be completely different from a long thin flow path at the opposite side of a cavity.
This is a typical area where mold-flow and DFM experience matter more than a generic design table.
4. Carefully Select the Parting Line
The parting line is where the mold halves meet.
Its position affects:
- appearance
- flash
- dimensional control
- demolding
- mold complexity
For cosmetic products, the parting line should normally be positioned away from prominent surfaces when possible.
For sealing components, it should be positioned carefully so that flash or mismatch does not interfere with the sealing surface.
A seemingly small change in part orientation can sometimes substantially improve manufacturability.
5. Design Flash-Sensitive Areas Carefully
One of LSR’s advantages is its ability to flow into very small spaces.
The same property makes flash prevention demanding.
Potential flash-sensitive areas include:
- mold parting surfaces
- insert interfaces
- shutoffs
- ejector-related features
- sliding structures
- vent locations
For precision seals and membranes, flash limits should be specified according to function rather than applying an unrealistic cosmetic requirement to the entire product.
6. Draft Angles Work Differently From Rigid Plastics
Silicone’s flexibility means LSR parts can often be removed from molds with less draft than rigid injection-molded thermoplastics.
However, draft still influences:
- demolding reliability
- automation
- surface damage
- part deformation
- tool wear
A design that can theoretically be removed manually may still be unsuitable for automated high-volume production.
Therefore, draft should be determined together with geometry, depth, texture, hardness, and demolding strategy.
7. Undercuts Are Possible—but Not Free
Flexible silicone can deform during removal, allowing certain undercuts to be molded without side actions.
This can simplify mold construction compared with rigid plastic components.
But undercuts increase demolding strain.
Important factors include:
- silicone hardness
- tear strength
- undercut depth
- wall thickness
- product geometry
- surface texture
- demolding direction
For mass production, the important question is not:
“Can the part be removed?”
It is:
“Can the part be removed thousands of times consistently without tearing, deformation, or excessive manual handling?”
8. Consider Ribs and Reinforcement Strategically
Silicone ribs may be used for:
- reinforcement
- sealing
- grip
- flow control
- positioning
Very tall, thin ribs may be more difficult to fill, demold, and maintain dimensionally.
Whenever a rib is critical to sealing or assembly, its tolerance and moldability should be evaluated separately from non-critical cosmetic features.
LSR Gate Design
The gate is the point where liquid silicone enters the mold cavity.
Gate design influences:
- filling pattern
- weld locations
- trapped air
- pressure
- gate vestige
- cosmetic appearance
- cavity balance
Possible gating strategies vary according to mold and product geometry.
The gate should normally be placed where material can fill the cavity consistently while minimizing:
- air traps
- unnecessary flow length
- visible gate marks
- defects in functional areas
For multi-cavity tooling, balanced filling becomes especially important.
Venting in LSR Mold Design
Air inside the mold cavity must escape as LSR enters.
Poor venting may lead to:
- incomplete filling
- trapped air
- burn or cure-related defects
- surface imperfections
- inconsistent dimensions
However, because uncured LSR flows readily, vents must also be engineered carefully to prevent excessive material escape and flash.
This makes vent design one of the precision aspects of LSR tooling.
Cold Runner Systems
High-volume LSR tooling often uses cold-runner technology.
The purpose is to keep material in the runner system from curing before it reaches the heated mold cavity.
This can:
- reduce cured runner waste
- support automation
- improve production efficiency
- enable multi-cavity production
Shin-Etsu identifies runnerless molding as one of the important capabilities of modern LSR systems.
However, cold-runner tooling is more technically complex than simple conventional tooling.
The additional tooling investment needs to be evaluated against expected production volume.
LSR Shrinkage: Why It Matters
Silicone does not leave the mold at exactly the cavity dimensions.
Dimensional change occurs as the material cures and cools.
This is generally referred to as molding shrinkage.
One common mistake is to specify one shrinkage percentage for all LSR products.
That approach is unreliable.
Shrinkage depends on variables such as:
- material formulation
- hardness
- filler system
- cure conditions
- mold temperature
- part geometry
- cavity pressure
- post-curing
- substrate interaction in overmolding
Actual supplier data demonstrates this variation. Shin-Etsu’s published LSR data shows that linear shrinkage can differ among formulations rather than following one universal value.
Therefore:
LSR shrinkage should be treated as a material- and process-specific engineering parameter, not as a fixed silicone constant.
How Is LSR Shrinkage Controlled?
Manufacturers normally manage dimensional shrinkage through a combination of:
Material Data
The selected LSR grade provides an initial expected shrinkage behavior.
Tooling Compensation
Critical mold dimensions may be adjusted according to the material and manufacturing experience.
Process Control
Variables such as cure conditions and molding parameters need to remain consistent.
Sampling
Prototype or T1 samples are measured and compared with drawings.
Tool Adjustment
Where necessary, tooling is corrected before mass-production approval.
For precision projects, this process should be considered during tooling planning rather than waiting until finished molds produce out-of-tolerance components.
LSR Injection Molding Tolerances
LSR can produce precision elastomeric components, but silicone should not automatically be assigned the same tolerances used for metal or rigid plastic.
Elastomers behave differently because dimensions can be influenced by:
- shrinkage
- deformation
- measuring force
- temperature
- part geometry
- mold closure
- material hardness
ISO 3302-1:2014 provides dimensional tolerance classes for molded, extruded and calendared solid rubber products and remains current following its 2024 confirmation.
Geometrical characteristics such as flatness, parallelism, perpendicularity, coaxiality and position are addressed separately by ISO 3302-2:2022.
These standards are useful references, but actual product tolerances should still be connected to functional requirements.
Fixed Dimensions vs Mold-Closure Dimensions
Not all molded dimensions behave in the same way.
A dimension formed completely within one mold component may be easier to control than a feature affected by the relationship between two mold halves.
For example:
- cavity-defined diameter
- mold-depth dimension
- parting-line dimension
- sealing-lip thickness
may have different manufacturing behavior.
This is why specifying the same tolerance across every drawing dimension is usually poor elastomer design practice.
How Should Engineers Specify LSR Tolerances?
Divide dimensions into three categories.
Critical Dimensions
Features directly affecting:
- sealing
- fit
- assembly
- functional performance
These deserve tighter control and defined inspection methods.
Important Dimensions
Features affecting product performance but allowing moderate variation.
Non-Critical Dimensions
Cosmetic or general dimensions where small variations do not affect function.
This approach concentrates manufacturing and inspection resources where they create actual value.
Why Over-Tolerancing Increases Cost
If every dimension is assigned an unnecessarily tight tolerance, the manufacturer may need:
- higher-precision mold machining
- additional mold corrections
- tighter process windows
- more sampling
- increased dimensional inspection
- more production sorting
- lower acceptable process variation
That increases both tooling and recurring production costs.
The correct goal is therefore not:
“Use the tightest possible tolerance.”
It is:
“Use the tolerance required for the product to function consistently.”
LSR Hardness and Material Selection
LSR is available in a broad range of hardness and performance grades.
Hardness affects properties such as:
- flexibility
- sealing behavior
- deformation
- tactile feel
- demolding
- compression behavior
But Shore hardness alone does not fully describe an LSR.
Two materials with similar hardness may have different:
- tear strength
- tensile strength
- elongation
- compression set
- viscosity
- transparency
- adhesion
- regulatory status
For example, current commercial LSR portfolios include specialized grades for electrical connector seals, food-contact products, automotive parts and healthcare applications.
Material selection should therefore begin with the actual working environment.
LSR Overmolding and Insert Molding
LSR can also be molded around rigid components.
Common substrates include:
- plastics
- metals
- electronic components
- rigid housings
- connectors
This technique is frequently referred to as:
LSR overmolding or insert molding.
Potential advantages include:
- integrated sealing
- reduced assembly
- fewer separate components
- improved water resistance
- improved ergonomic surfaces
Some LSR formulations are specifically designed to adhere to selected engineering plastics during molding. Shin-Etsu, for example, lists self-adhesive LSR systems developed for substrates including PC, PBT and polyamide materials.
However, successful overmolding requires evaluation of:
- substrate material
- mold temperature
- adhesion compatibility
- insert positioning
- thermal resistance
- contamination
- mechanical retention
Overmolding should therefore be assessed as an integrated material-and-process system.
Common Applications for LSR Injection Molding
LSR injection molding is used across multiple industries.
Automotive
Examples include:
- connector seals
- gaskets
- sensor components
- electrical protection
- EV connector components
Dow specifically markets several injection-molding LSR grades for connector seals, radial seals and related automotive electrical applications.
Medical and Healthcare
Potential applications include:
- masks
- valves
- seals
- tubing-related components
- non-implantable molded parts
Material selection and processing controls should be based on the regulatory and biocompatibility requirements of the actual device.
Consumer Products
LSR is also used for:
- wearable components
- household products
- personal-care products
- baby products
- food-contact components
Electronics and Industrial Components
Applications may include:
- waterproof seals
- cable protection
- grommets
- electrical insulation
- vibration protection
- connector components
What Determines LSR Injection Molding Cost?
There is no universal LSR injection molding price.
Total project cost is generally influenced by:
Engineering + Tooling + Material + Cycle Time + Production Quantity + Secondary Operations + Inspection + Packaging
1. Tooling Complexity
LSR tooling cost increases with factors such as:
- product size
- cavity count
- undercuts
- tight tolerances
- complex parting lines
- precision shutoffs
- cold-runner systems
- inserts
- overmolding
- surface requirements
A complex multi-cavity automated mold requires a different investment from a simple single-cavity development tool.
2. Number of Cavities
More cavities generally increase mold complexity but increase production output per cycle.
For high-volume programs, this can lower recurring unit manufacturing costs.
Therefore:
The lowest-cost mold is not necessarily the lowest-cost manufacturing solution.
Tooling should be evaluated against projected annual volume.
3. LSR Material
Material cost depends on the selected formulation.
Special requirements such as:
- medical-grade material
- high-tear strength
- self-adhesion
- optical transparency
- conductivity
- flame resistance
- self-lubrication
- special temperature resistance
can affect material selection and cost.
4. Part Weight
More silicone means higher recurring material consumption.
Part weight is influenced by:
- overall dimensions
- wall thickness
- ribs
- solid sections
- internal geometry
Reducing unnecessary material through DFM can improve manufacturing economics.
5. Cycle Time
Machine cost is closely connected to production time.
Cycle time may increase because of:
- thick sections
- slow-curing material
- difficult demolding
- manual operations
- complex geometry
A product that takes substantially longer to cure or remove from the tool may cost more even if it uses approximately the same amount of silicone.
6. Automation Level
LSR injection molding is particularly attractive for automated manufacturing.
Modern LSR systems can integrate material metering, injection, molding and automated demolding.
Higher automation can reduce:
- manual handling
- labor variability
- repetitive operations
But automation also requires more sophisticated tooling and equipment.
Whether that investment makes sense depends on production volume.
7. Secondary Operations
Additional processes may include:
- post-curing
- trimming
- printing
- laser marking
- bonding
- assembly
- testing
- specialized cleaning
Every added operation contributes to recurring production cost.
8. Inspection Requirements
Precision silicone components may require:
- first-piece inspection
- dimensional measurement
- visual inspection
- flash inspection
- functional testing
- sampling plans
- traceability
The more critical the part, the more important it becomes to define inspection requirements before quotation.
LSR Injection Molding vs Compression Molding
These processes serve different manufacturing needs.
| Factor | LSR Injection Molding | Silicone Compression Molding |
|---|---|---|
| Material | Liquid silicone rubber | Usually solid/HCR silicone |
| Automation | High potential | Moderate |
| Tool complexity | Higher | Often simpler |
| Production efficiency | Strong at scale | Effective for many simpler parts |
| Fine geometry | Strong | Application dependent |
| Multi-cavity production | Excellent | Available |
| Initial tooling investment | Often higher | Often lower |
| High-volume economics | Strong | Depends on product |
| Manual material loading | Minimal in automated system | More common |
| Overmolding | Strong capability | Possible, application dependent |
The correct decision should be based on:
geometry + quantity + material + tolerance + automation + total manufacturing cost
rather than choosing a process only because one mold appears cheaper.
When Should You Choose LSR Injection Molding?
LSR injection molding is particularly attractive when a project requires a combination of:
- stable repeat production
- complex silicone geometry
- precision features
- high production volume
- automated manufacturing
- low manual handling
- overmolding
- multiple cavities
- consistent silicone properties
Compression molding may remain preferable for some simpler, lower-volume or larger silicone products.
There is no universal “best” silicone molding process.
Common LSR Design Mistakes
Several design issues repeatedly increase project risk.
Mistake 1: Applying Plastic Tolerances Directly to Silicone
Silicone is an elastomer and must be toleranced accordingly.
Mistake 2: Ignoring Shrinkage Until Sampling
Shrinkage needs to be considered during mold design.
Mistake 3: Designing Excessive Undercuts
A flexible product may still tear during high-speed automated demolding.
Mistake 4: Putting the Parting Line Through a Critical Seal
Flash or mismatch can affect sealing performance.
Mistake 5: Making Every Dimension Critical
This increases tooling and inspection cost without necessarily improving performance.
Mistake 6: Choosing Material by Hardness Only
Hardness does not define tear strength, compression set, viscosity, adhesion or regulatory suitability.
Mistake 7: Selecting Cavity Count Based Only on Initial Tool Cost
Annual production volume should determine the manufacturing strategy.
LSR DFM Checklist
Before approving tooling, review:
Material
- Required Shore hardness?
- Tear-strength requirement?
- Compression-set requirement?
- Temperature environment?
- Food-contact or healthcare requirements?
- Transparency or color?
Geometry
- Uniform wall thickness?
- Problematic thick sections?
- Extreme thin sections?
- Deep undercuts?
- Long thin ribs?
- Difficult internal geometry?
Mold
- Appropriate parting line?
- Gate location?
- Venting strategy?
- Flash-sensitive areas?
- Cold-runner requirement?
- Number of cavities?
Dimensions
- Which dimensions are functional?
- Which dimensions are sealing-critical?
- Are tolerances appropriate for an elastomer?
- Has expected shrinkage been considered?
Production
- Initial quantity?
- Estimated annual volume?
- Manual or automated demolding?
- Secondary operations?
- Inspection plan?
- Packaging requirements?
A DFM review before tooling can prevent much more expensive modifications after mold completion.
Manufacturer Insight: How NEWTOP Approaches an LSR Project
At NEWTOP, an LSR project should start with engineering evaluation rather than immediately building a mold.
A typical review considers:
- Application requirements
What will the silicone component actually do? - Material selection
Which hardness and formulation are appropriate? - Geometry review
Are walls, ribs, sealing features and undercuts moldable? - Tolerance review
Which dimensions genuinely require tight control? - Shrinkage strategy
How should the selected material and geometry be considered in mold dimensions? - Tool architecture
What cavity count, parting line, gating and runner system are appropriate? - Production strategy
Is the product intended for prototype quantities, initial market production or long-term mass production? - Quality planning
Which features need dimensional, visual or functional inspection?
This approach helps connect the product design with the expected manufacturing volume before production tooling is finalized.
Frequently Asked Questions About LSR Injection Molding
What does LSR stand for?
LSR stands for Liquid Silicone Rubber, a flowable silicone elastomer widely used in injection molding.
Is LSR a thermoplastic?
No.
LSR is a thermosetting elastomer. It is injected into a heated mold where it cures into a crosslinked silicone component.
What is the difference between LSR and HCR silicone?
LSR is a liquid two-component material primarily suited to automated injection molding.
HCR is a high-consistency or solid silicone rubber commonly processed through compression molding, transfer molding, extrusion and related processes.
The better option depends on the part geometry, quantity, material properties, and manufacturing strategy.
Does LSR shrink after molding?
Yes.
But there is no single shrinkage percentage applicable to every LSR. Shrinkage varies according to material formulation and processing conditions. Published supplier data confirms variation between different LSR grades.
What tolerances can LSR injection molding achieve?
Tolerance capability depends on dimensions, geometry, mold construction, material, shrinkage and measuring method.
ISO 3302-1 provides an established framework for dimensional tolerances in molded rubber products.
Critical tolerances should nevertheless be reviewed individually during DFM.
Can LSR be molded with undercuts?
Yes, selected undercuts can often be demolded because cured silicone is flexible.
However, excessive undercuts can increase tearing, deformation and demolding difficulty.
Does an LSR part need draft?
Some LSR geometries can be demolded with little draft compared with rigid plastics, but draft remains useful for reliable automated production.
The required draft depends on depth, texture, hardness and geometry.
Does LSR require post-curing?
Not always.
Requirements depend on the material, application and performance requirements. Some LSR grades are specifically designed without a required post-curing stage.
Is LSR injection molding expensive?
LSR injection molding can require sophisticated tooling and equipment, particularly for multi-cavity and cold-runner production.
However, its automation potential and production efficiency can make it economically attractive for suitable high-volume projects.
Total manufacturing cost should therefore be considered rather than tooling cost alone.
Can LSR be molded onto plastic or metal?
Yes.
LSR can be used in insert molding and overmolding applications. Specialized self-adhesive formulations are available for selected plastics and other substrates.
What files should I provide for an LSR quotation?
Ideally provide:
- STEP/STP or other 3D CAD
- 2D drawing
- material requirements
- Shore hardness
- critical tolerances
- application conditions
- initial order quantity
- estimated annual volume
- compliance requirements
This allows the manufacturer to evaluate both tooling and long-term production strategy.
Start Your LSR Injection Molding Project
Successful LSR injection molding is not determined by the molding machine alone.
Material selection, DFM, mold design, shrinkage compensation, tolerance strategy, cavity count and process control must work together.
For a new LSR project, the most effective approach is to review the design before production tooling begins.
Send NEWTOP your:
- 3D CAD file
- engineering drawing
- application requirements
- target hardness
- expected quantity
- critical dimensions
- compliance requirements
Our engineering team can evaluate the design for LSR molding, identify potential manufacturing risks, recommend an appropriate tooling strategy, and prepare the project for sampling and mass production.