Custom Flange Gaskets with Bolt Holes — Instant Quote
Custom Flange Gaskets with Bolt Holes — Instant Quote
A flange gasket is a ring with a bolt-hole pattern, cut to match your flange exactly. Enter the diameters, bolt circle, and hole details and we CNC cut (laser, waterjet, and more) a drop-in seal in any material — no minimum order, shipped within one business day. Cut to ±0.015″ tolerance. Up to 32.5″ × 32.5″ for most materials.
Dimensions You Enter for a Flange Gasket
| Outer diameter | Full outer width of the flange |
| Inner diameter | The center bore |
| Bolt circle diameter | Center-to-center diameter of the bolt pattern |
| Bolt holes | Number of holes and hole diameter |
Available in every material we stock — neoprene, silicone, EPDM, Buna-N, Viton, PTFE, cork, and fiber. Additional specs on request.
Common Flange Gasket Applications
- ANSI and DIN pipe flanges
- Pump, valve, and manifold flanges
- Compressor and blower housings
- Process-piping connections
- Custom and legacy flange patterns
Need a simple OD/ID seal without bolt holes? See custom ring gaskets. For square faces, try rectangular gaskets. Compare elastomers in our materials guide, or review how to measure before you quote.
Flange Gasket FAQs
Can you cut flange gaskets with bolt holes?
Yes — enter the outer diameter, inner diameter, bolt-circle diameter, and the number and size of bolt holes, and we cut a matching flange gasket ready to drop over the studs.
Do you match ANSI or DIN flange sizes?
We cut to whatever dimensions you provide, so any ANSI, DIN, or custom flange pattern can be matched exactly. Provide the measurements and we handle the rest.
How are your gaskets cut and how accurate are they?
CNC cut (laser, waterjet, and more) to ±0.015″ tolerance.
How fast do flange 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 a custom flange gasket with bolt holes from Fastest Gaskets — no minimum order, ships in one business day. Large orders may take longer.
Related
- Custom gasket hub
- DXF upload
- Ring gaskets
- Disc gaskets
- Square gaskets
- Rectangular gaskets
- Square gaskets with rounded corners
- Rectangular gaskets with rounded corners
- Neoprene gaskets
- EPDM gaskets
- Silicone gaskets
- Buna-N gaskets
- Viton gaskets
- PTFE gaskets
- Cork gaskets
- Fiber gaskets
- Materials guide
- Measuring guide
- FAQ
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.