Compressed Fiber Gaskets

Compressed fiber (often abbreviated CNAF for Compressed Non-Asbestos Fiber) is a sheet gasketing material made of aramid or other synthetic fibers bound by an elastomer matrix. It is the modern replacement for asbestos sheet gaskets and the workhorse material for high-pressure flange sealing.

Durometer
0.016" to 0.125" thickness
Highlight
Balanced compressibility & strength
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Properties of Compressed Fiber gaskets

Cannon Gasket cuts Compressed Fiber gaskets to your drawing in durometer and thickness specifications of 0.016" to 0.125" thickness. Good resistance to oils, fuels, water, and dilute chemicals. Moderate performance in low to medium pressure and temperature service.

Compressed Fiber tolerances and customization

Standard dimensional tolerances on Compressed Fiber 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 Compressed Fiber 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 Compressed Fiber Performs

- High compressive strength — handles bolt loads that would crush soft rubber. - Resistance to steam, hot water, and a broad range of hydrocarbons depending on binder. - Excellent dimensional stability over service life.

Where Compressed Fiber Gaskets Are Specified

Pipe flange gaskets, pressure vessel sealing, steam and condensate service, hydrocarbon processing, refinery and petrochemical applications, and any high-pressure or high-temperature application where soft rubber cannot hold a seal.

When to Choose Another Material

For low-pressure or imperfect-flange sealing, cork-rubber or solid elastomer conforms better. For aggressive chemicals or very high temperature, specify expanded PTFE or flexible graphite.

Manufacturing Methods

Die-cut, Flash cut and steel-rule-cut. Often used in pipe-flange ring gaskets and full-face flange gaskets.

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Key Properties
  • Thickness
  • Balanced compressibility & strength
  • Oil and fuel resistant
  • Conforms to flange irregularities
  • Cost-effective general purpose
Engineering Tools
Applications
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Frequently Asked Questions

Common Compressed Fiber 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.
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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