Custom Cork Gaskets Cut to Size — Instant Quote
Custom Cork Gaskets Cut to Size — Instant Quote
Cork (and cork-rubber composite) compresses and conforms to irregular surfaces at low bolt loads, making it ideal for sealing large, lightly-clamped covers. It resists oil well and is a classic choice for engine covers, transformers, and electrical gaskets. We CNC cut (laser, waterjet, and more) custom cork gaskets to your exact dimensions with no minimum order and ship within one business day. Cut to ±0.015″ tolerance. Up to 32.5″ × 32.5″ in every cork thickness.
Custom Cork Gasket Specifications
| Temperature range | −40°F to 250°F |
| Compressibility | High — conforms to uneven, low-clamp-load surfaces |
| Excellent resistance to | Oils, fuels, and solvents; good sealing at low bolt torque |
| Poor resistance to | High pressure, strong acids/alkalis, and repeated flexing |
| Thicknesses available | 1/16", 1/8", 3/16", 1/4" |
Additional specifications and specific durometers are available on request — contact us with your requirements.
Common Cork Gasket Applications
- Engine and valve cover gaskets
- Transformer and electrical equipment seals
- Oil-pan and low-pressure flange gaskets
- Sight-glass and inspection-cover seals
- Machinery access covers
- Fuel and lubrication housings
When to Choose Cork
Choose Cork when you need to seal a large, lightly-bolted cover with an uneven surface — its compressibility fills gaps that solid rubber cannot at low torque. For high-pressure or high-flex service, choose a fiber or elastomer gasket instead.
Cork Gasket FAQs
What is cork gasket material good for?
Cork excels at sealing large, low-pressure, lightly-bolted covers with uneven surfaces — engine covers, transformers, and oil pans — because it compresses and conforms at low clamp loads.
Does cork resist oil?
Yes — cork and cork-rubber composites resist oils, fuels, and solvents well, which is why they are common in engine and lubrication applications.
Can cork handle high pressure?
No. Cork is best for low-pressure, low-torque sealing. For high-pressure flanges, choose a compressed fiber gasket.
What size cork gaskets can you cut?
Up to 32.5″ × 32.5″ in every cork and cork-rubber thickness (1/32″ to 3/8″). Adhesive-backed cork is the same, except 3/32″, which goes up to 36″ × 32″.
How are your cork gaskets cut and how accurate are they?
CNC cut (laser, waterjet, and more) to ±0.015″ tolerance.
How fast do cork gaskets ship?
Most orders ship in one business day. Large orders may take longer.
Enter your dimensions in the quote tool above for an instant price on custom Cork gaskets from Fastest Gaskets — no minimum order, ships in one business day. Large orders may take longer.
Related
Need help before you order?
Which material should I pick?
Full comparison on our Materials Guide.
- Hot parts with oil or fuel (engines, exhaust) → Viton (FKM)
- Hot parts, no oil (ovens, HVAC) → Silicone
- Oil or fuel (pumps, hydraulics, petroleum) → Buna-N (Nitrile) — or Viton for higher heat
- Water / outdoor / sun → EPDM
- General automotive or light oil → Neoprene
- Chemicals / aggressive fluids → PTFE (Teflon) — or Viton for high heat plus chemicals
- Soft seal / uneven surfaces / low pressure → Cork blends
Not sure which material fits? Email us at fastestgaskets@gmail.com.
We CNC cut (laser, waterjet, and more) to ±0.015″. Up to 32.5″ × 32.5″ for most materials; the quote tool shows the exact limit for the one you pick. Ships in one business day. Large orders may take longer.
How to measure
- Measure the outside size — diameter for rounds, or length × width for rectangles and squares.
- Measure the inside opening and any holes (ID, bolt holes, bolt circle if it is a flange).
- Note the thickness you need — pick it in the quoter.
- Enter sizes in inches.
- Already have a drawing? Upload a DXF for an instant price.
More detail: Measuring Guide. Materials: Materials Guide.