Published: October 30, 2026 · Topic: custom rubber extrusion RFQ requirements
Quick Answer
For a useful custom rubber extrusion quote, provide the profile cross-section or physical sample, all critical dimensions, application and mating geometry, preferred material or performance requirements, hardness or density, service environment, secondary operations, trial and production quantities, packaging, destination and target timing. If some details are unknown, identify them as open items instead of guessing. A manufacturer can then distinguish an early budget estimate from a production-ready quotation.
Custom Rubber Extrusion RFQ Checklist
| Information | What to provide | Why it affects the quote |
|---|---|---|
| 1. Cross-section | Controlled drawing, square-on profile photo or authorized physical sample | Defines the die geometry and whether existing tooling may be relevant |
| 2. Critical dimensions | Overall width and height, wall thickness, lips, bulbs, channels, flange or groove dimensions | Controls tooling, fit and inspection requirements |
| 3. Application | Where the seal is installed, mating components, movement and sealing function | Helps evaluate profile construction and installation risks |
| 4. Material requirements | EPDM, silicone, TPE/TPV, sponge rubber or required properties if the polymer is undecided | Compound family, grade and cure route influence processing and cost |
| 5. Hardness or density | Shore A for solid rubber; density or compression behavior for sponge where known | Affects sealing force, retention and manufacturing controls |
| 6. Service environment | Temperature, UV, ozone, water, oils, chemicals, indoor/outdoor use and regulatory needs | Guides material and validation requirements |
| 7. Secondary operations | Adhesive, flocking, coating, punching, cut lengths, joining, corners or metal carrier | Adds process steps, fixtures, inspection and packaging needs |
| 8. Quantity | Trial quantity, first order and estimated annual demand in pieces, metres or rolls | Determines the practical production and packing route |
| 9. Acceptance requirements | Critical tolerances, test methods, samples, inspection records and approval process | Defines what must be controlled and documented |
| 10. Delivery scope | Destination, requested timing, Incoterm if known, coil or cut-length packing and labels | Supports freight, packaging and schedule review |
Which Details Have the Greatest Effect on Price?
The largest cost drivers are normally the profile size and complexity, compound, tooling route, quantity, tolerance and inspection requirements, secondary operations, cut or coil format, packaging and freight scope. The lowest unit price is not always the lowest project cost if the quote excludes tooling, sample trials, joining, adhesive, inspection or export packing.
| Quote element | Questions to confirm |
|---|---|
| Tooling | Is existing tooling suitable, or is a new die required? Who owns and maintains project-specific tooling? |
| Sample stage | Does the quote include trial material, sample length, dimensional report, freight and revision rounds? |
| Production pricing | What order quantity, packaging format, material grade and approval status does the unit price assume? |
| Secondary work | Are adhesive, flocking, holes, joins, corners, cut lengths or labels included? |
| Quality documents | Which certificates, inspection records or test reports are included and which require separate review? |
Budget Estimate vs Production-Ready Quote
| Stage | Typical inputs | Appropriate use |
|---|---|---|
| Early budget estimate | Reference image, approximate envelope, material family and annual volume range | Project screening and comparison of feasible routes |
| Tooling and sample quote | Controlled cross-section, critical dimensions, material, trial length and approval requirements | Authorizing tooling and sample preparation |
| Production-ready quote | Approved drawing, compound or performance specification, tolerances, quantity, secondary operations, packaging and delivery scope | Purchase-order and production planning |
Label unknown information clearly. A quotation based on assumptions should list those assumptions so they can be replaced by approved requirements before production.
Copy-and-Send RFQ Template
What If You Do Not Have a Drawing?
Start with a clean, relaxed sample or a square-on cross-section photo. Add written overall width and height, wall thickness, channel or flange dimensions and installation photos. The custom rubber seal measurement guide explains how to prepare this information. A controlled drawing should still be reviewed before new tooling or production approval.
How to Specify Tolerances and Material
ISO 3302-1 provides dimensional-tolerance classes and conformity methods for solid rubber products, including extrusions. ASTM D2000 is a commonly referenced classification system for rubber products in automotive applications. Use the applicable drawing, compound specification and test method for the actual project; a standard reference does not replace application validation.
Identify function-critical dimensions rather than applying unnecessarily tight tolerances everywhere. If the exact compound is unknown, describe the environment and required behavior, then confirm the proposed grade and validation plan before approval.
Frequently Asked Questions
Can I request a quote without a CAD drawing?
Yes. A clear square-on profile photo, written dimensions, application details and an authorized physical sample can start the review. A controlled drawing is normally required before tooling or production approval.
Which dimensions should be marked as critical?
Mark dimensions that control retention, sealing contact, compression, assembly clearance or connection to another component.
Does every custom profile require new tooling?
No. The requested section can be checked against available tooling. A project-specific geometry may require a new die after drawing review.
What quantities should I include?
Provide the trial quantity, expected first order and estimated annual demand in pieces, metres or rolls.
Is a photo enough for production pricing?
A photo supports identification and early review, but production pricing usually needs confirmed dimensions, material, quantity, secondary operations and acceptance requirements.
Ready for a Profile Review?
See the available rubber extrusion profile options, compare the custom EPDM development process, or send your drawing and quantity for review.