Cork-Rubber Gaskets

Cork-rubber is a composite of natural cork granules bonded by a rubber matrix (typically Buna-N or neoprene). The result is a gasket material that compresses and conforms like cork but holds together mechanically like rubber — useful in low-pressure sealing where the mating flanges may not be perfectly flat or parallel.

Durometer
0.031" to 0.500" thickness
Highlight
Excellent vibration absorption
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Custom Cork / Rubber gaskets from Cannon Gasket
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Properties of Cork / Rubber gaskets

Cannon Gasket cuts Cork / Rubber gaskets to your drawing in durometer and thickness specifications of 0.031" to 0.500" thickness. Good resistance to petroleum oils, fuels, and dilute chemicals. Not recommended for strong acids, aromatic solvents, or temperatures above 250°F.

Cork / Rubber tolerances and customization

Standard dimensional tolerances on Cork / Rubber gaskets land around ±0.010" to ±0.015" on OD and ID, depending on material durometer and thickness. Tighter tolerances are available on selected grades. Cannon Gasket cuts Cork / Rubber to custom profiles in-house and matches lead times to your production volume. PSA backing, pad printing, custom packaging, and kitting are all on the menu when you need them.

How Cork-Rubber Performs

- Compresses and conforms to imperfect mating surfaces — fills rough flanges. - Oil resistance from the rubber binder (Buna-N or neoprene). - Vibration damping and noise reduction.

Where Cork-Rubber Gaskets Are Specified

Oil pan gaskets, transmission and differential covers, transformer sealing, valve cover gaskets, low-pressure flange sealing, vibration-damping pads under equipment, and applications where conformability is more important than precision.

When to Choose Another Material

For high-pressure or high-vacuum service specify solid rubber or non-asbestos fiber. For aggressive chemicals specify Viton or PTFE.

Manufacturing Methods

Die-cut, flash cut and steel-rule-cut. PSA backing available for installation

Request a QuoteCork / Rubber GasketsDownload PDFPrint-ready spec sheetClaude SkillExpert prompt .md
Key Properties
  • Thickness
  • Excellent vibration absorption
  • Oil and fuel resistant
  • Good compression recovery
  • Low permeability
Engineering Tools
Applications
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Frequently Asked Questions

Common Cork / Rubber questions.

Are you ISO 9001 certified?
Yes, ISO 9001:2015 certified. Documented quality management covers incoming material verification, in-process inspection, calibrated measurement, final inspection, non-conformance handling, corrective action, and full lot traceability. AS9100-ready for aerospace, with MIL-spec and FDA 21 CFR 177.2600 / USP Class VI grades available on request.
Can you cut custom gasket profiles?
Yes. Custom steel-rule and rotary tooling is built in-house from your drawing or DXF. Complex profiles, multiple through-cuts, tight bolt patterns, and irregular perimeters are all standard work.
Can you supply PSA-backed gaskets?
Yes. Pressure-sensitive adhesive backing is a standard option on most rubber and fiber gasketing, with either permanent or removable liners. Kiss-cut on liner and through-cut both supported on flatbed and rotary presses.
What tolerances can you hold on gasket dimensions?
Standard die-cut tolerance is ±0.010 to ±0.015 inch on OD and ID, depending on material durometer and thickness. Tighter tolerances are available on select grades and thicknesses. Ask if your drawing specifies something tighter and we will confirm feasibility during the quote.
Which gasket material is right for my application?
Start with temperature range, fluid contact, and regulatory requirements. Buna-N is the default for oil and fuel. EPDM for weather, water, and steam. Silicone for extreme temperature and FDA grades. Viton for aggressive chemicals. Our gasket material selection guide walks through the decision framework.
How fast do you return a quote?
Most RFQs come back within one business day. Simple profile updates to an existing tool quote same-day. Send a drawing, DXF, or competing part number and our engineering team reviews material, tolerance, and volume before pricing.
What is the minimum order quantity?
Minimums depend on the part and material. We cut prototype and first-article quantities for engineering evaluation, then scale up to production volumes from the same tooling. For high-volume programs we run JIT, VMI, and Kanban replenishment out of Fontana, California.
What should I send with an RFQ?
Ideal: a drawing or DXF, material spec (or compound family), estimated annual volume, and any regulatory callouts (FDA, USP Class VI, AS9100, MIL-spec). If you only have a sample or a part number from a competing supplier, send that and we will reverse-engineer the spec before quoting.
What are typical lead times?
Prototype and first-article parts usually ship in 5-10 business days. Production runs from existing tooling are 2-3 weeks depending on volume and material lead time. Rush and expedite options available on a case-by-case basis.
Need custom Cork / Rubber gaskets?
From prototype to production, any shape, any volume.
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ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971