Custom Die Cut Silicone Gaskets
Manufacturer & Custom Solutions
Custom Die Cut Silicone Gaskets
ZSR Silicone die-cuts silicone gaskets from sheet stock up to 36 inches wide. Whether you need a simple circle or a complex multi-hole pattern, our CNC cutters and steel-rule dies deliver clean edges. Adhesive backing is available for easy assembly.
FDA 21 CFR 177.2600
Rubber Articles Intended for Repeated Use
LFGB 30&31
EU Food Contact Materials
USP Class VI / ISO 10993
Biocompatibility of Medical Devices
RoHS / REACH
Environmental Compliance
UL 94
Flammability of Plastic Materials
Built to Your Exact Spec
Custom Silicone Gaskets Options
Six Silicone Grades, One Perfect Match
Every gasket starts with the right compound. Platinum-cured and peroxide-cured systems are available for all grades — we recommend platinum cure for food and medical contact.
| Grade | Hardness (Shore A) | Temperature | Compliance | Best For |
|---|---|---|---|---|
| Industrial VMQ | 30 – 80 | -60°C to +230°C | RoHS / REACH | General industrial sealing |
| FDA Food Grade | 30 – 70 | -60°C to +230°C | FDA 21 CFR 177.2600, LFGB | Food & beverage equipment |
| Medical Grade (Platinum) | 10 – 70 | -60°C to +230°C | USP Class VI / ISO 10993 | Medical devices & laboratory |
| High Temperature | 40 – 80 | up to +300°C | RoHS | Ovens, lighting, engine bays |
| Fluorosilicone (FVMQ) | 40 – 80 | -60°C to +200°C | RoHS | Fuel, oil & solvent exposure |
| LSR (Liquid Silicone) | 10 – 80 | -60°C to +230°C | FDA / medical grades | High-volume precision parts |
Built to Your Drawing, Down to 0.05 mm
Size, thickness, cross-section and geometry are fully custom. Send a drawing, a flange standard number, or a physical sample — we handle the rest.
| Item | Range / Options |
|---|---|
| Size Range | Built to your drawing; standard flange sizes DN10 – DN300 / NPS 1/2″ – 12″ (see standards table below) |
| Thickness | 0.5 – 10 mm sheet-cut; molded parts per drawing — common: 1.5 / 2 / 3 / 4.5 mm |
| Cross-Section | Flat / lip seal / custom profile |
| Custom Geometry | Bolt holes, slots, tabs, self-centering designs |
| Construction | Solid silicone / adhesive-backed / PTFE-laminated |
| Tolerance | Molded ±0.05 – 0.1 mm; die-cut ±0.2 mm |
Any Color Your Brand or Assembly Needs
We color-match silicone compounds to Pantone or RAL references, including translucent and transparent grades for visual inspection points.
Your Brand, Built Into the Part
Branding, part numbers and batch traceability — molded in, engraved or printed, without compromising the seal.
Four Processes, One Factory
Molding, cutting, injection and finishing under one roof — we match the process to your volume, geometry and tolerance target.
| Process | How It Works | Best For |
|---|---|---|
| Compression Molding | Pre-formed silicone pressed and cured in a heated mold | Medium volumes, large or thick gaskets |
| Die Cutting | Precision-cut from silicone sheet | Flat gaskets, fast turnaround |
| LSR Injection Molding | Liquid silicone injected into closed molds | High volumes, tight tolerances |
| Adhesive Backing | PSA tape laminated and die-cut to shape | Peel-and-stick assembly |
| Rapid Prototyping | Prototype tooling before production mold | Fit & function validation |
Die Cutting vs. Molding: Which Fits Your Project?
Both processes make custom silicone gaskets, but they fit different needs. Die cutting cuts gaskets from silicone sheets. Molding shapes gaskets inside a metal mold. Here is a simple comparison to help you choose:
Factor | Die Cutting | Molding |
|---|---|---|
Tooling Cost | Low (simple cutting die, or no die with CNC cutting) | High (custom mold needed) |
Lead Time | Fast — samples in days | Longer — mold making takes weeks |
MOQ | Low, prototypes welcome | Higher, to cover mold cost |
Best Shape | Flat, 2D shapes | 3D shapes with lips, ribs, or curves |
Thickness | 0.5 mm – 25 mm (sheet based) | Almost any thickness |
Tolerance | ±0.1 mm to ±0.13 mm | Tighter, set by the mold |
Unit Cost at Low Volume | Lower | Higher |
Unit Cost at High Volume | Higher | Lower |
Our advice
If you need a flat gasket, a fast sample, or a small to medium order, die cutting is your best choice. If you need a 3D shape or a very large order, molding will save you money in the long run. Not sure which one fits? Send us your drawing — our engineers will check it and suggest the best process for free.
Custom Shapes We Can Cut
Our factory can die cut silicone gaskets in almost any flat shape, including:
How to send us your design: A DXF, DWG, PDF, or STEP file is perfect. No drawing? No problem — send us a sample, a photo with sizes, or even a hand sketch. We will make the production drawing for you and confirm it before cutting.
Material & Thickness Options
We keep a wide range of silicone materials in stock, so we can start cutting fast:
Material Type | Thickness Range | Hardness | Best For |
|---|---|---|---|
Solid Silicone Rubber | 0.5 – 20 mm | 30 – 80 Shore A | General sealing, high pressure joints |
Silicone Sponge | 1 – 25 mm | Soft to firm | Low-pressure seals, dust and water protection |
Silicone Foam | 1 – 25 mm | Very soft | Gap filling, soft cushion seals |
Fluorosilicone (FVMQ) | 0.5 – 10 mm | 40 – 70 Shore A | Fuel, oil, and solvent contact |
Fiberglass Reinforced Silicone | 0.8 – 6 mm | 60 – 70 Shore A | Stable size, no stretch, flange use |
Conductive Silicone | 0.5 – 6 mm | 50 – 75 Shore A | EMI shielding, anti-static uses |
More options on request: FDA food grade, medical grade, high temperature (up to 300°C), flame retardant, metal detectable, and adhesive backing (acrylic or silicone PSA).
Standard colors include translucent, red, white, black, gray, and blue. Custom colors are available — just send us a Pantone number or a sample.
Related Silicone Gaskets
| Image | Product | Type | Short Info | Action |
|---|---|---|---|---|
| DIN 3869 Silicone Sealing Ring | Standard & Size | DIN 3869 profile sealing rings in silicone for hydraulic ports, working from -60°C to +200°C. | View Details |
| AS568 Standard Silicone Gaskets | Standard & Size | AS568 standard-size silicone gaskets for groove-based sealing applications. | View Details |
| EN 1514-1 Silicone Gasket | Standard & Size | EN 1514-1 silicone flat gaskets for PN flanges, IBC and FF types, standard and custom sizes. | View Details |
| ISO 7483 Silicone Gasket | Standard & Size | Silicone gaskets to ISO 7483 for ISO 7005 flanges, made for international projects and tenders. | View Details |
| Custom Die Cut Silicone Gaskets | Standard & Size | Flat silicone gaskets cut to any shape from sheet stock. Precision cutting for exact fits. | View Details |
| ISO 1127 Silicone Gasket | Standard & Size | Sanitary silicone gaskets matched to ISO 1127 stainless steel tube sizes for food and pharma lines. | View Details |
|
| Custom Molded Silicone Gaskets | Standard & Size | Three-dimensional silicone gaskets made by compression or injection molding. For complex sealing shapes. | View Details |
| B16.21 Silicone Gasket | Standard & Size | ZSR makes silicone gaskets to ASME B16.21, ring type and full face type, for Class 150 to 2500 pipe flanges. | View Details |
| ISO 2852 Silicone Gasket | Standard & Size | ISO 2852 silicone clamp gaskets for food industry couplings, FDA grade, factory direct from ZSR. | View Details |
| Standard Flange Silicone Gaskets | Standard & Size | Silicone gaskets cut to fit pipe flanges. Matches ANSI, DIN and JIS bolt patterns. | View Details |
| B16.5 Silicone Gasket | Standard & Size | Silicone gaskets from ZSR sized to fit ASME B16.5 flanges, NPS 1/2 to 24 inch, Class 150 to 2500. | View Details |
| Tri-Clamp / Sanitary Silicone Gaskets | Standard & Size | Hygienic silicone gaskets for food and pharmaceutical pipe connections. CIP and SIP compatible. | View Details |
| DIN 7603 Silicone Sealing Ring | Standard & Size | Flat silicone sealing rings made to DIN 7603 for screw plugs, banjo bolts and threaded fittings. | View Details |
| Metric Size Silicone Gaskets | Standard & Size | Metric dimension silicone gaskets for international equipment standards. | View Details |
| DIN 2690 Silicone Gasket | Standard & Size | Silicone flat gaskets to DIN 2690 / EN 1514-1 dimensions for PN6 to PN40 flanges, food grade available. | View Details |
| DIN 2691 Silicone Gasket | Standard & Size | Silicone gaskets made to DIN 2691 for tongue and groove flanges PN10 to PN160, ideal for plant repair. | View Details |
| DIN 11851 Silicone Gasket | Standard & Size | Food grade silicone gaskets for DIN 11851 sanitary unions, DN10 to DN150, FDA material. | View Details |
| DIN 32676 Silicone Gasket | Standard & Size | DIN 32676 tri-clamp silicone gaskets, FDA food grade, full size range in stock at ZSR factory. | View Details |
| FDA Food Grade Silicone Gasket | Grade | Food-safe silicone gaskets for processing equipment. FDA-compliant and taste-neutral. | View Details |
| Medical Grade Silicone Gasket | Grade | Biocompatible silicone gaskets for medical devices. Sterilizable with full documentation. | View Details |
| Industrial Grade Silicone Gasket | Grade | General-purpose silicone gaskets for industrial sealing. Reliable, durable and cost-effective. | View Details |
| High Temperature / Heat Resistant Silicone Gaskets | Special Function | Heat-resistant silicone gaskets rated for continuous use above 200°C. For ovens and furnaces. | View Details |
| Solid Silicone Rubber Gaskets | Materials | Solid silicone rubber gaskets with excellent compression set resistance and long service life. | View Details |
| Fluorosilicone (FVMQ) Gaskets | Materials | Fuel and solvent-resistant silicone gaskets for chemical processing and automotive applications. | View Details |
| Transparent / Clear Silicone Gaskets | Color | Clear silicone gaskets for visible sealing and light-transmitting applications. | View Details |
| Black / White Silicone Gaskets | Color | Standard black and white silicone gaskets. Fastest delivery from stock. | View Details |