Custom Rubber Washers Cut to Any Size
Custom Rubber Washers Cut to Any Size
Custom Rubber Washers Cut to Your Size
Enter the outside diameter, the hole size and the thickness you need, pick a material, and see the price immediately. We cut each washer to those exact numbers — there is no nearest-stock-size compromise and no minimum order. Most orders ship in one business day.
Why people have washers cut
- The size does not exist off the shelf. Odd bolt sizes, metric-to-imperial adapters, and older equipment routinely need an OD or ID that no catalog stocks.
- The material matters more than the size. A fuel pump needs Buna-N, an outdoor fitting needs EPDM, a steam line needs silicone. Hardware-store washers are usually generic rubber with no stated compound.
- You need a specific thickness. Crush and standoff both depend on it, and stock washers give you whatever the supplier had.
Materials
- Neoprene — general purpose; weather, ozone and oil resistant.
- EPDM — outdoor, hot water and steam. Best UV resistance we stock.
- Buna-N (nitrile) — fuel, oil and hydraulic contact.
- Silicone — -80°F to 450°F.
- Viton — aggressive chemicals and high heat.
- Cork and compressed fiber — where you need compression into an uneven face, or hard clamping.
Sizing
- Outside diameter — the full width of the washer.
- Inside diameter — the bolt or shaft hole. Measure the fastener, not the old washer, if the old one has deformed.
- Thickness — from thin shim washers up to heavy load-spreading pads.
- Inches or millimeters — switch units in the builder; both are cut to the same tolerance.
Sealing washers, spacers and load-spreaders
The same part does three jobs depending on material and thickness: a thin soft washer seals, a thicker rigid one spaces, and a wide one spreads load across sheet metal or soft material. If you are not sure which compound suits your application, order one of each material at single quantity — there is no minimum, so a test set costs very little.
Pricing and shipping
Price is calculated from your dimensions, material and quantity as you type. Quantity discounts apply automatically — a run of fifty costs far less per washer than one. Most orders ship in one business day. Large orders may take longer.
Need a ring gasket instead? See custom ring gaskets.
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.