Injection Molding
Tooling and molding for your repeat plastic parts.
YOUR SILICONE PRODUCT. YOUR CURE STATE. YOUR FINISHED FIT.
Silicone / LSR Material for Your Custom Parts
Review liquid silicone rubber material for your custom seals, membranes and flexible components. Specify the complete silicone product, supply form, cure state, operating conditions and critical dimensions so your quotation and sample approval cover the same finished part.
This is a materials purchasing guide, distinct from the existing Silicone/LSR Molding service page. Availability and manufacturing scope require drawing review.
Full ProductKeep grade, color and batch.
Cure & Supply FormSpecify the delivered condition.
Exposure & FitDefine media, movement and interfaces.
Your ApprovalAgree dimensions and function.
4 Starting Points for Your Silicone Review
LSR Molded Components
For your liquid silicone rubber material review, confirm the exact two-component product, tooling scope and cured-part acceptance.
Solid Silicone Compounds
Keep the compound, cure system and processing route distinct from LSR. A finished gasket appearance does not identify its raw material form.
Prototype Samples
Use silicone prototype parts for an agreed fit or function review. Record material and processing differences from the intended production product.
Multi-Material Assemblies
Review your silicone and substrate together, including interface geometry, surface preparation, process and an agreed adhesion test.
Review the Full LSR Product for Your Drawing
Review ELASTOSIL LR 3003/30 for Your Drawing
For your ELASTOSIL LR 3003/30 custom molded parts, retain the full manufacturer product, color and batch. Confirm the current product instructions, cure and any required post-curing, tooling, sample and finished-part evidence.
| Your decision | What to confirm |
|---|---|
| Material identity | Full product, color, component system and batch |
| Delivered condition | Cure and any agreed post-curing |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
LSR, solid compounds and cured stock are different purchasing specifications.
| Your decision | What to confirm |
|---|---|
| LSR: Exact Two-Component Product | Confirm the full liquid silicone rubber material, components, handling and current manufacturer processing instructions. Specify platinum cured silicone through the actual product and cure system, not a generic label. |
| Cured Stock or a Separate Compound | For cured sheet, cord or another silicone compound, identify its producer, full product, supplied condition and lot. Do not substitute LSR resin information for unspecified stock or a different cure system. |
Agree Your Finished Fit
Review the actual assembly and measuring state.
| Your decision | What to confirm |
|---|---|
| Seal interfaces | Groove, squeeze, motion and mating surface |
| Exposure | Media, temperature, time and load |
| Measurement | Support, critical dimensions and agreed method |
Retain Product and Part Records
Material documents and finished-part approval serve different purposes.
| Your decision | What to confirm |
|---|---|
| Identity | Manufacturer product, color, batch and supplied condition |
| Drawing | Critical dimensions, sealing edges and appearance |
| Function | Approved sample and specified tests |
Review ELASTOSIL LR 3003/40 for Your Drawing
For your ELASTOSIL LR 3003/40 custom molded parts, retain the full manufacturer product, color and batch. Confirm the current product instructions, cure and any required post-curing, tooling, sample and finished-part evidence.
| Your decision | What to confirm |
|---|---|
| Material identity | Full product, color, component system and batch |
| Delivered condition | Cure and any agreed post-curing |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
LSR, solid compounds and cured stock are different purchasing specifications.
| Your decision | What to confirm |
|---|---|
| LSR: Exact Two-Component Product | Confirm the full liquid silicone rubber material, components, handling and current manufacturer processing instructions. Specify platinum cured silicone through the actual product and cure system, not a generic label. |
| Cured Stock or a Separate Compound | For cured sheet, cord or another silicone compound, identify its producer, full product, supplied condition and lot. Do not substitute LSR resin information for unspecified stock or a different cure system. |
Agree Your Finished Fit
Review the actual assembly and measuring state.
| Your decision | What to confirm |
|---|---|
| Seal interfaces | Groove, squeeze, motion and mating surface |
| Exposure | Media, temperature, time and load |
| Measurement | Support, critical dimensions and agreed method |
Retain Product and Part Records
Material documents and finished-part approval serve different purposes.
| Your decision | What to confirm |
|---|---|
| Identity | Manufacturer product, color, batch and supplied condition |
| Drawing | Critical dimensions, sealing edges and appearance |
| Function | Approved sample and specified tests |
Review ELASTOSIL LR 3003/50 for Your Drawing
For your ELASTOSIL LR 3003/50 custom molded parts, retain the full manufacturer product, color and batch. Confirm the current product instructions, cure and any required post-curing, tooling, sample and finished-part evidence.
| Your decision | What to confirm |
|---|---|
| Material identity | Full product, color, component system and batch |
| Delivered condition | Cure and any agreed post-curing |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
LSR, solid compounds and cured stock are different purchasing specifications.
| Your decision | What to confirm |
|---|---|
| LSR: Exact Two-Component Product | Confirm the full liquid silicone rubber material, components, handling and current manufacturer processing instructions. Specify platinum cured silicone through the actual product and cure system, not a generic label. |
| Cured Stock or a Separate Compound | For cured sheet, cord or another silicone compound, identify its producer, full product, supplied condition and lot. Do not substitute LSR resin information for unspecified stock or a different cure system. |
Agree Your Finished Fit
Review the actual assembly and measuring state.
| Your decision | What to confirm |
|---|---|
| Seal interfaces | Groove, squeeze, motion and mating surface |
| Exposure | Media, temperature, time and load |
| Measurement | Support, critical dimensions and agreed method |
Retain Product and Part Records
Material documents and finished-part approval serve different purposes.
| Your decision | What to confirm |
|---|---|
| Identity | Manufacturer product, color, batch and supplied condition |
| Drawing | Critical dimensions, sealing edges and appearance |
| Function | Approved sample and specified tests |
Review ELASTOSIL LR 3003/60 for Your Drawing
For your ELASTOSIL LR 3003/60 custom molded parts, retain the full manufacturer product, color and batch. Confirm the current product instructions, cure and any required post-curing, tooling, sample and finished-part evidence.
| Your decision | What to confirm |
|---|---|
| Material identity | Full product, color, component system and batch |
| Delivered condition | Cure and any agreed post-curing |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
LSR, solid compounds and cured stock are different purchasing specifications.
| Your decision | What to confirm |
|---|---|
| LSR: Exact Two-Component Product | Confirm the full liquid silicone rubber material, components, handling and current manufacturer processing instructions. Specify platinum cured silicone through the actual product and cure system, not a generic label. |
| Cured Stock or a Separate Compound | For cured sheet, cord or another silicone compound, identify its producer, full product, supplied condition and lot. Do not substitute LSR resin information for unspecified stock or a different cure system. |
Agree Your Finished Fit
Review the actual assembly and measuring state.
| Your decision | What to confirm |
|---|---|
| Seal interfaces | Groove, squeeze, motion and mating surface |
| Exposure | Media, temperature, time and load |
| Measurement | Support, critical dimensions and agreed method |
Retain Product and Part Records
Material documents and finished-part approval serve different purposes.
| Your decision | What to confirm |
|---|---|
| Identity | Manufacturer product, color, batch and supplied condition |
| Drawing | Critical dimensions, sealing edges and appearance |
| Function | Approved sample and specified tests |
Review ELASTOSIL LR 3003/70 for Your Drawing
For your ELASTOSIL LR 3003/70 custom molded parts, retain the full manufacturer product, color and batch. Confirm the current product instructions, cure and any required post-curing, tooling, sample and finished-part evidence.
| Your decision | What to confirm |
|---|---|
| Material identity | Full product, color, component system and batch |
| Delivered condition | Cure and any agreed post-curing |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
LSR, solid compounds and cured stock are different purchasing specifications.
| Your decision | What to confirm |
|---|---|
| LSR: Exact Two-Component Product | Confirm the full liquid silicone rubber material, components, handling and current manufacturer processing instructions. Specify platinum cured silicone through the actual product and cure system, not a generic label. |
| Cured Stock or a Separate Compound | For cured sheet, cord or another silicone compound, identify its producer, full product, supplied condition and lot. Do not substitute LSR resin information for unspecified stock or a different cure system. |
Agree Your Finished Fit
Review the actual assembly and measuring state.
| Your decision | What to confirm |
|---|---|
| Seal interfaces | Groove, squeeze, motion and mating surface |
| Exposure | Media, temperature, time and load |
| Measurement | Support, critical dimensions and agreed method |
Retain Product and Part Records
Material documents and finished-part approval serve different purposes.
| Your decision | What to confirm |
|---|---|
| Identity | Manufacturer product, color, batch and supplied condition |
| Drawing | Critical dimensions, sealing edges and appearance |
| Function | Approved sample and specified tests |
Compare Named LSR Products Under One Test
WACKER ELASTOSIL LR 3003 series · Tensile strength, MPa · ISO 37 Type 1
Tensile Strength (MPa)
Typical vulcanizate references from one supplier guide, not LK design allowables or a finished-part ranking. Confirm current exact product, cure, post-cure, specimen and test conditions for your application.
Supplier guide, page 96 →2 Purchasing Forms. Different Evidence.
LSR: Exact Two-Component Product
Confirm the full liquid silicone rubber material, components, handling and current manufacturer processing instructions. Specify platinum cured silicone through the actual product and cure system, not a generic label.
Cured Stock or a Separate Compound
For cured sheet, cord or another silicone compound, identify its producer, full product, supplied condition and lot. Do not substitute LSR resin information for unspecified stock or a different cure system.
Resolve 6 Silicone Material Risks
Hardness & specification for Your Finished Part
Silicone Shore hardness is one material input. Can Shore hardness alone specify an LSR material? Confirm the full product, cure condition, dimensions, media, load and functional approval.
Flash & sealing edges for Your Finished Part
For LSR flash, identify sealing surfaces, permissible parting-line condition, deflashing method and inspection. Agree the actual finished edge rather than treating all flash as harmless or assuming removal is included.
Cure & post-curing for Your Finished Part
Silicone post curing depends on the exact product, required properties and application evidence. Follow current manufacturer instructions and agree the supplied condition; do not use a universal time or temperature recipe.
Adhesion & overmolding for Your Finished Part
How should LSR overmolding adhesion be approved? Define both materials, interface geometry, surface preparation, process and the load, environment and test used for acceptance.
Compression & movement for Your Finished Part
Define groove, squeeze, pressure, movement, media and mating finish for your seal. Hardness and a visual fit do not establish long-term compression behavior or leak performance.
Final fit & records for Your Finished Part
For LSR material certification, agree manufacturer product, color, batch and supplied condition. Keep material identity, dimensional inspection and functional approval as separate evidence.
Separate Your Material Decision From the Process
LSR Injection Molding
Review exact LSR product, tooling, cure, parting lines and approved sample.
Review service →
Compression Route Review
Compare the actual compound, geometry, tooling, cure and quote scope before choosing the route.
Review service →
Prototype Fit Review
Use silicone prototype parts for agreed checks; retain differences from production LSR.
Review service →Process and material availability require project confirmation. The existing LSR molding service page remains a separate process guide.
Agree 3 Checks for Your Receiving Team
| Your check | Evidence to agree |
|---|---|
| 1 | Manufacturer, full silicone product, color, components or supplied stock, condition and batch. |
| 2 | Controlled drawing, critical dimensions, sealing edges, support and agreed measurement state. |
| 3 | Approved sample, agreed LSR material certification and specified functional or exposure records. |
6 Inputs for Your Silicone Quote
- 01CAD + controlled drawing
- 02Full silicone product + color + supplied form
- 03Quantities + tooling + manufacturing route
- 04Cure condition + exposure + movement
- 05Critical fit + sealing edge + appearance
- 06Material records + functional tests + delivery
Material · Tooling · Cure and finishing · Quantity · Inspection · Delivery
Answers Before You Specify
What information is needed for a custom LSR molding quote?
Send CAD and controlled drawing, full silicone product and color, order quantities, tooling scope, media, temperature, movement, critical fits, appearance and required inspection records.
Is silicone flash removal included in the molding quote?
Agree the permissible parting-line condition, sealing surfaces, removal method and inspection scope explicitly. Quotes must cover the same finished-part requirement.
When should LSR injection molding replace silicone compression molding?
Review the exact material, geometry, quantities, tooling, cure, handling and sample acceptance. These routes use different material and process evidence; suitability requires a project-specific review.
Can a cast silicone prototype validate production LSR parts?
Only for its agreed purpose. Record differences in material, cure, tooling and processing. A cast fit sample does not by itself validate production LSR performance.
Does every silicone grade require post curing?
No universal rule is applied. Follow current instructions for the exact product and agree cure state, required properties, application evidence and the supplied finished condition.
What records are needed for specified silicone grade parts?
Agree full manufacturer product, color, batch, supplied cure condition, drawing and approved sample, dimensional inspection and specified functional tests. A medical grade LSR requirement needs exact-product and intended-application evidence; no blanket finished-part approval is implied.
Retain the Full Silicone Product and Cure Condition
| Reference | What it does and does not identify |
|---|---|
| LSR / liquid silicone rubber | A liquid processing form; specify the complete product and component system. |
| HCR / solid silicone rubber | A separate compound form and processing direction, not an automatic LSR substitute. |
| Platinum cured silicone | A cure-system description; retain exact product and current instructions. |
| ELASTOSIL LR 3003 series | Named manufacturer products. Full grade suffix, batch and cure evidence remain necessary. |
VMQ and other generic silicone designations do not approve a manufacturer-grade substitution. Retain the complete product and application evidence rather than inventing an EN/DIN equivalent.
Product reference: WACKER material and processing guide. Generated concepts illustrate geometry, not actual customer parts or material-grade identification.
