Custom Triangle Gaskets Cut to Size — Instant Quote
Custom Triangle Gaskets Cut to Size — Instant Quote
A triangle gasket is a three-sided seal cut to your exact dimensions — used for specialty flanges, brackets, and corner covers. We CNC cut (laser, waterjet, and more) custom triangle gaskets in any material with clean edges, no minimum order, shipped within one business day.
Dimensions You Enter for a Triangle Gasket
| Base width | Length of the bottom edge |
| Height | Perpendicular height from base to apex |
| Thickness | 1/16", 1/8", 3/16", or 1/4" |
| Corners | Square or rounded |
Available in every material we stock — neoprene, silicone, EPDM, Buna-N, Viton, PTFE, cork, and fiber. Additional specs on request.
Common Triangle Gasket Applications
- Triangular flange and port seals
- Bracket and gusset gaskets
- Corner and edge cover seals
- Specialty enclosure openings
- Custom equipment covers
Triangle Gasket FAQs
What size triangle gaskets can you cut?
Enter the base width and height in the quote tool and we cut a triangle gasket to those exact dimensions in your chosen material and thickness.
Can triangle gaskets have rounded corners?
Yes — a rounded-corner option is available so the gasket matches parts with radiused points.
Enter your dimensions in the quote tool above for an instant price on custom triangle gaskets from Fastest Gaskets — no minimum order, ships in one business day.
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.