Custom Rubber Seals

Rubber seals prevent fluid and gas leakage in static and dynamic assemblies—from hydraulic cylinders to aerospace actuators. Anlintech molds precision rubber seals in FKM, NBR, EPDM, and silicone for leak-free performance across demanding duty cycles. See our O-ring material selection guide to match compound to application.

Types of Rubber Seals

Material Matching by Duty

DutyRecommended Material
Static, oil-exposedNBR or FKM
Dynamic, high-speedFKM or HNBR (low friction)
Outdoor / weatherEPDM
Food / medicalSilicone (FDA/USP)

Compare options in our FKM guide and EPDM vs NBR vs FKM comparison.

Design Considerations

Industry Applications

Frequently Asked Questions

How do I choose a seal material?

Match the media, temperature, pressure, and motion (static vs dynamic) first, then pick the compound—see the table above and our material guides.

What is compression set and why does it matter?

Compression set is the permanent deformation after prolonged compression. Low compression set means the seal springs back and keeps sealing.

Can you make custom seal profiles?

Yes. We mold custom cross-sections and profiles to drawing in FKM, NBR, EPDM, and silicone.

Do you supply aerospace-grade seals?

Yes. We supply AMS 7276 / NAS 1613 FKM seals with full documentation and traceability.

Get a Quote

Share your duty cycle, media, and drawings. Request a seal quote → or read our FAQ. Back to custom rubber parts.

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