Can you make custom gaskets to my exact dimensions?

Yes. We cut custom gaskets to the dimensions you specify. Enter your measurements in the online configurator, choose your material (Neoprene, Silicone, EPDM, Buna-N, Cork, or Fiber), and get an instant price. Custom gaskets ship within one business day after the order is placed. Larger orders may require additional time. No minimum order.

Do you cut custom flange gaskets with bolt holes?

Yes. Our Flange Gasket template lets you specify the outer diameter, inner diameter (bore), bolt circle diameter, number of bolt holes, and bolt hole size. We cut custom flange gaskets in Neoprene, Silicone, EPDM, Buna-N (NBR), Cork, and Fiber/Compressed Gasket Paper with instant online pricing.

Can you cut circular disk gaskets and ring gaskets?

Yes. We cut circular disk gaskets (solid discs) and ring gaskets (annular rings with a center bore) up to 32.5 inches in diameter. Neoprene, Silicone, EPDM, Buna-N, and Cork all available.

Do you cut rectangular gaskets and square gaskets?

Yes. We cut flat rectangular gaskets, square gaskets, and rounded-corner rectangular gaskets to your exact dimensions. Available in Neoprene, Silicone, EPDM, Buna-N (NBR), Cork, and Fiber/Compressed Gasket Paper. Maximum part size 32.5 x 32.5 inches.

What elastomer gasket materials do you cut?

We cut custom elastomer flat gaskets in Neoprene (CR), Silicone, Buna-N (NBR), EPDM, Cork, and Fiber/Compressed Gasket Paper. Each material is available in multiple thicknesses.

How do I get an instant price for a custom cut gasket?

Use the configurator on this page. Select your gasket shape, pick a material and thickness, enter your dimensions, and the price updates live - no quote request, no email, no back-and-forth. Add directly to cart.

What gasket shapes can you cut?

We cut over 30 shapes: disk gaskets, ring gaskets, flange gaskets (with bolt holes), exhaust gaskets, rectangular gaskets, rounded-corner rectangles, square gaskets, capsule/slot gaskets, ovals, pentagons, hexagons, octagons, and trapezoids.

Is there a minimum order quantity for custom cut gaskets?

No minimum order. We cut single custom gaskets as readily as bulk orders. Price per piece decreases automatically with quantity in the configurator.

How long does production take?

Most orders are cut and shipped within one business day. Larger orders may take longer.

What is the maximum size gasket you can cut?

The largest part is 32.5″ × 32.5″ in Neoprene, Silicone, EPDM, Buna-N, Cork, and Fiber/Compressed Gasket Paper. The configurator tells you if your part is too large for the selected material. Contact us for larger parts.

What file format do I need to submit for a custom gasket order?

No file is needed for the standard gasket shapes. Our online configurator generates the cut geometry from the dimensions you enter. A DXF file is only needed if you want a custom outline that is not one of the standard shapes: choose the Custom DXF Upload option and upload a .dxf file.

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Custom Silicone Gaskets Cut to Size — Instant Quote

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Custom silicone gaskets, cut to your exact size and shipped in one business day. Enter your dimensions in the quoter above for an instant price. We CNC cut (laser, waterjet, and more) every silicone gasket to order and hold ±0.015". Silicone cuts up to 32.5" x 32.5" in every thickness. No minimum order.

Silicone is the gasket material to pick when heat is the problem. It stays flexible and keeps sealing from -65°F to +450°F, which covers ovens, heaters, HVAC equipment, lighting and most hot enclosures. It also holds up to ozone, UV and weather, so it works outdoors.

It is not the right choice for oil or fuel. Silicone swells in petroleum, so use Buna-N for oil, or Viton for fuel and heat together.

Silicone gasket specs

Thicknesses	1/16", 1/8", 3/16", 1/4"
Colors	Black or red (solid sheet)
Hardness	60 Shore A standard. Other durometers available on request.
Temperature range	-65°F to +450°F
Max part size	Up to 32.5" x 32.5" (all silicone thicknesses)
Smallest feature	0.25"
Tolerance	±0.015"
Adhesive backing	Silicone 1/16" to 1/4"; silicone foam 1/8" to 1/4"
Ships	One business day. Order by 2PM Pacific, Monday to Friday.

Silicone seals in any shape

We cut rings, rectangles, discs, flange gaskets with bolt holes, and any shape from your drawing. For a simple shape, pick a template: ring gaskets, rectangular and square gaskets, disc gaskets or flange gaskets. Have a print or CAD file? See custom gaskets cut to your print, or upload your DXF for a price on the exact part.

Where silicone gaskets work well

Oven doors, heaters, kilns and other heat equipment
HVAC units, blowers and duct access panels
Light fixtures and electrical enclosures that run warm
Outdoor covers and housings that sit in sun and weather
Pads and spacers that need to stay soft in the cold

How to order

Choose a shape above, or upload a DXF for a custom part.
Pick silicone and a thickness (1/16" to 1/4").
Enter your dimensions. The quoter shows your price right away.
Order by 2PM Pacific, Monday to Friday, and it ships in one business day. Large orders may take longer.

Replacing an old gasket? Start with the measuring guide.

Silicone vs other rubber

Material	Best at	Avoid for
Silicone	High and low heat, UV, weather	Oil and fuel
EPDM	Water, steam, outdoor use	Oil and fuel
Neoprene	General purpose, light oil	Very high heat
Buna-N	Oil and fuel	Sun and ozone
Viton	Fuel, chemicals and heat	Steam

Full comparisons are in the materials guide.

Silicone gasket FAQ

What temperature can silicone gaskets handle?
Our silicone is rated from -65°F to +450°F. That is a wider range than EPDM or neoprene, and it stays flexible in the cold.

What thicknesses do you offer?
1/16", 1/8", 3/16" and 1/4". Every thickness can be cut up to 32.5" x 32.5".

How hard is your silicone?
Our standard silicone is 60 Shore A, and other durometers are available on request. 60A is medium-soft, so it fills uneven surfaces without needing a lot of bolt force.

How fast will my silicone gasket ship?
In one business day. Orders placed by 2PM Pacific, Monday to Friday, ship the next business day. Large orders may take longer.

How accurate are the cuts?
We CNC cut (laser, waterjet, and more) to ±0.015".

Can I get silicone gaskets with adhesive backing?
Yes. Adhesive-backed silicone comes in 1/16" to 1/4", and adhesive-backed silicone foam in 1/8" to 1/4".

Can silicone handle oil or fuel?
No. Silicone swells in petroleum oil and fuel. Use Buna-N for oil, or Viton for fuel with high heat.

Can you cut a custom shape from my drawing?
Yes. Upload a DXF file on our DXF page and you get an instant price on the exact shape, with no minimum order.

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.

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Custom Silicone Gaskets Cut to Size — Instant Quote