Injection Molding
Tooling and molding for your repeat plastic parts.
YOUR COMPOUND. YOUR CURE. YOUR SEALING CONDITIONS.
EPDM Material for Your Custom Parts
Plan custom EPDM parts around the complete compound, cure state, media and finished fit. For EPDM rubber molding, custom EPDM gaskets or profiles, agree drawing, material evidence, quantities, sample approval and inspection before comparing quotations.
EPDM is a material and compound review. Rubber molding, sheet cutting and extrusion availability require project confirmation; no thermoplastic processing route is implied.
Full CompoundKeep formulation, cure and batch.
Compound & CureSpecify the delivered condition.
Exposure & FitDefine media, movement and interfaces.
Your ApprovalAgree dimensions and function.
4 Starting Points for Your EPDM Review
Molded Seals & Diaphragms
Review your sealing bead, parting line, groove and compound with the intended rubber molding route. A photograph does not identify the raw polymer or cure.
Cut Sheet Gaskets
For custom EPDM gaskets, specify sheet producer, compound, thickness, cure and cut-edge condition. Keep stock identification distinct from raw polymer purchasing.
Extruded Profiles
For EPDM extrusion services, agree the complete cured compound, cross section, dimensional state, corner joining and cut length. Confirm process availability for your drawing.
Flexible Boots & Connections
Review movement, clamping, mating surfaces and media. Fit and Shore hardness alone do not establish service-life or seal performance.
Review Your Raw Polymer and Finished Compound
Review NORDEL IP 4760P for Your Drawing
For a NORDEL IP 4760P custom parts quote, retain the complete raw-polymer identity and the separately approved compound. NORDEL 4760P typical raw-polymer viscosity does not specify the finished seal hardness or cure.
| Your decision | What to confirm |
|---|---|
| Material identity | Full raw product plus controlled compound and batch |
| Delivered condition | Cure system and supplied condition |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
Raw polymer, controlled compound and cured stock require distinct purchasing evidence.
| Your decision | What to confirm |
|---|---|
| Raw Polymer Into an Approved Compound | EPDM rubber material selection begins with the full raw polymer, compounding source and controlled compound specification. Identify cure system and required compound evidence; a raw-polymer datasheet is not a finished-part certificate. |
| Cured Stock or Finished Components | For sheet, profiles and molded parts, retain compound identity, supplied cure state, lot, dimensions and finished-part evidence. Do not replace a cured stock specification with only a raw-polymer trade name. |
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 VISTALON 2504 for Your Drawing
VISTALON 2504 identifies an EPDM raw polymer, not a complete finished-rubber formulation. Confirm full product, compounding source, compound specification, cure and final part approval.
| Your decision | What to confirm |
|---|---|
| Material identity | Full raw product plus controlled compound and batch |
| Delivered condition | Cure system and supplied condition |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
Raw polymer, controlled compound and cured stock require distinct purchasing evidence.
| Your decision | What to confirm |
|---|---|
| Raw Polymer Into an Approved Compound | EPDM rubber material selection begins with the full raw polymer, compounding source and controlled compound specification. Identify cure system and required compound evidence; a raw-polymer datasheet is not a finished-part certificate. |
| Cured Stock or Finished Components | For sheet, profiles and molded parts, retain compound identity, supplied cure state, lot, dimensions and finished-part evidence. Do not replace a cured stock specification with only a raw-polymer trade name. |
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 KELTAN 5470 for Your Drawing
For a KELTAN 5470 custom parts quote, retain the exact regional raw-polymer product and compound traceability. KELTAN 5470 and 5470C are separate designations; do not substitute by partial name.
| Your decision | What to confirm |
|---|---|
| Material identity | Full raw product plus controlled compound and batch |
| Delivered condition | Cure system and supplied condition |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
Raw polymer, controlled compound and cured stock require distinct purchasing evidence.
| Your decision | What to confirm |
|---|---|
| Raw Polymer Into an Approved Compound | EPDM rubber material selection begins with the full raw polymer, compounding source and controlled compound specification. Identify cure system and required compound evidence; a raw-polymer datasheet is not a finished-part certificate. |
| Cured Stock or Finished Components | For sheet, profiles and molded parts, retain compound identity, supplied cure state, lot, dimensions and finished-part evidence. Do not replace a cured stock specification with only a raw-polymer trade name. |
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 DUTRAL TER 4038 EP for Your Drawing
For a DUTRAL TER 4038 EP custom parts quote, retain the complete suffix and approved formulation. DUTRAL TER 4038 raw-polymer identification does not approve finished hardness, compression set or a different supply form.
| Your decision | What to confirm |
|---|---|
| Material identity | Full raw product plus controlled compound and batch |
| Delivered condition | Cure system and supplied condition |
| Acceptance | Tooling, sample, dimensions and function |
Confirm the Supply Form
Raw polymer, controlled compound and cured stock require distinct purchasing evidence.
| Your decision | What to confirm |
|---|---|
| Raw Polymer Into an Approved Compound | EPDM rubber material selection begins with the full raw polymer, compounding source and controlled compound specification. Identify cure system and required compound evidence; a raw-polymer datasheet is not a finished-part certificate. |
| Cured Stock or Finished Components | For sheet, profiles and molded parts, retain compound identity, supplied cure state, lot, dimensions and finished-part evidence. Do not replace a cured stock specification with only a raw-polymer trade name. |
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 |
Keep Raw-Polymer Viscosity Separate From Seal Hardness
Dow raw-polymer guide · Mooney viscosity, MU · ASTM D1646 · ML 1+4 at 125°C
Raw-Polymer Mooney Viscosity (MU)
Typical raw-polymer values from one Dow guide, not Shore hardness, finished-part properties or a seal ranking. Confirm current product, formulation, cure and application evidence separately.
Supplier guide, page 2 →2 Purchasing Forms. Different Evidence.
Raw Polymer Into an Approved Compound
EPDM rubber material selection begins with the full raw polymer, compounding source and controlled compound specification. Identify cure system and required compound evidence; a raw-polymer datasheet is not a finished-part certificate.
Cured Stock or Finished Components
For sheet, profiles and molded parts, retain compound identity, supplied cure state, lot, dimensions and finished-part evidence. Do not replace a cured stock specification with only a raw-polymer trade name.
Resolve 6 EPDM Material Risks
Hardness & identity for Your Finished Part
Does an EPDM raw polymer grade specify finished seal hardness? No. EPDM Shore hardness must be tied to the finished compound, scale, method, dwell time, specimen, conditioning and cure state.
Media & oil contact for Your Finished Part
For EPDM oil resistance, identify the exact oil or fluid, concentration, temperature and duration. Can EPDM seals be used with mineral oil? Do not approve that service from the EPDM name; obtain compound-specific compatibility and representative exposure evidence before selection.
Peroxide & sulfur cure for Your Finished Part
How should peroxide and sulfur cured EPDM be selected? Compare the actual compound, cure instructions and application tests. Peroxide cured EPDM and sulfur cured EPDM are formulation and processing directions, not automatic finished-part approvals.
Compression & recovery for Your Finished Part
What test conditions define EPDM compression set? Specify method, specimen, compression, temperature, duration, cure and recovery interval. Keep this material test separate from final groove fit and leak acceptance.
Exposure & movement for Your Finished Part
Define outdoor exposure, UV or ozone requirements, temperature cycling, stretch, movement and assembly details. A generic weathering description does not approve your compound, joint or full seal assembly.
Final fit & records for Your Finished Part
For EPDM material certification, agree raw-polymer chain when required, compound specification, cure state, lot, drawing and approved sample. Dimensional inspection and functional tests remain separate records.
Match the Route to Your EPDM Compound
Rubber Molding Review
For EPDM compression molding or another agreed rubber molding route, review compound, tooling, cure, flash and sample approval.
Review requirements ↓
Sheet Gasket Review
Agree cured sheet identity, thickness, cut edge, holes, packing and dimensional acceptance.
Review requirements ↓
Rubber Profile Review
For EPDM extrusion services, agree compound, cured cross section, dimensional state, cutting and joints.
Review requirements ↓Rubber processes require project confirmation; the existing thermoplastic injection and extrusion service guides are not EPDM process approvals.
Agree 3 Checks for Your Receiving Team
| Your check | Evidence to agree |
|---|---|
| 1 | Full compound specification, producer, cure state, lot and required raw-polymer traceability. |
| 2 | Controlled drawing, sealing bead, parting-line condition, dimensions and agreed measurement state. |
| 3 | Approved sample, agreed EPDM material certification and specified media, compression or assembly tests. |
6 Inputs for Your EPDM Quote
- 01CAD + controlled drawing
- 02Full compound + cure + supplied form
- 03Quantities + tooling + manufacturing route
- 04Media + temperature + movement
- 05Critical fit + sealing edge + appearance
- 06Material records + functional tests + delivery
Material · Tooling · Cure and finishing · Quantity · Inspection · Delivery
Answers Before You Specify
What should an EPDM custom parts quote include?
Send CAD and controlled drawing, full compound and cure state, quantities, process scope, sealing geometry, mating surfaces, media, temperature, motion and required records. An EPDM molding quote should cover the same finished-part condition and approval scope.
Does an EPDM raw polymer grade specify finished seal hardness?
No. The raw polymer is only part of the compound. Specify the finished formulation or controlled compound designation, cure condition, hardness method and agreed physical and functional evidence.
Can EPDM seals be used with mineral oil?
Do not assume compatibility from EPDM or hardness. Identify the actual oil, additives, temperature and duration, and require compound-specific compatibility review plus representative testing. Agree a suitable alternative when evidence does not support the service.
How should peroxide and sulfur cured EPDM be selected?
Review the full formulation, current processing instructions, required properties, environment and application evidence. Do not exchange cure systems while treating the material specification as unchanged.
What test conditions define EPDM compression set?
Agree the method, specimen, deflection, temperature, duration, cure and recovery interval. Retain test conditions with the result and separately validate finished-part groove fit and sealing behavior.
Can one EPDM compound replace another at the same hardness?
Not automatically. Compare full compound, cure, media compatibility, compression behavior, dimensional response, joining and required records, then approve a representative finished sample.
Retain Your Full Compound and Supplied Condition
| Reference | What it does and does not identify |
|---|---|
| EPDM raw polymer | Ethylene-propylene-diene polymer identification; not a complete cured-rubber formulation. |
| Controlled EPDM compound | Retain formulation identifier, producer, cure system, lot and agreed physical requirements. |
| Peroxide / sulfur cure | Specify the actual system and delivered cure condition; no automatic equivalence. |
| NORDEL / VISTALON / KELTAN / DUTRAL | Raw-polymer trade names require their full grade and suffix plus separate compound and finished-part approval. |
Generic polymer designations do not approve a manufacturer-grade substitution. Retain the complete product, suffix and application evidence rather than inventing an EN/DIN equivalent.
Product references: Dow, ExxonMobil, ARLANXEO and Versalis raw-polymer information. Generated concepts illustrate geometry, not actual customer parts or material-grade identification.
