ZSR Silicone makes custom silicone gaskets for food, medical, automotive, and industrial use. We match JIS, ASME, and DIN flange standards. Fast tooling. Low MOQ. Ships worldwide.
Rubber Articles Intended for Repeated Use
EU Food Contact Materials
Biocompatibility of Medical Devices
Environmental Compliance
Flammability of Plastic Materials
Five certified gasket families, one custom manufacturer. Every grade ships with batch traceability and COA documentation.
21 CFR 177.2600 compliant compounds for food contact, dairy, and beverage lines.
Learn more →USP Class VI and ISO 10993 options for pharma, bioprocessing, and sterile equipment.
Learn more →Silver-aluminum and nickel-graphite filled silicones for shielding enclosures.
Learn more →-60°C to +300°C service for exhaust, sterilizer, and process equipment seals.
Learn more →USP Class VI sanitary seals for tri-clamp, DIN 11851, and SMS fittings.
Learn more →| 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 |
Tank seals, dairy processing, brewing, and bottling lines.
Bioreactors, sterilizers, drug delivery, and lab equipment.
Engine seals, exhaust gaskets, coolant systems, and EV battery packs.
Pipeline flanges, pressure vessels, and API-rated sealing.
LED thermal pads, enclosure seals, and EMI shielding.
Fuel systems, low-outgassing seals, and high-altitude use.
Here is what we can make. Need something else? Just ask.
Item | Range | Test Standard |
|---|---|---|
Material | VMQ, FVMQ, platinum cured | — |
Hardness | Shore A 30 ~ 90 | ASTM D2240 |
Thickness | 0.5mm ~ 20mm | ASTM D374 |
Max Outer Diameter | Up to 2000mm | — |
Working Temp | -60°C to +300°C | — |
Compression Rate | 15% ~ 35% | ASTM F36 |
Rebound Rate | ≥ 40% | ASTM F36 |
Food Safe | ||
Medical Safe | ||
Color | Clear, white, red, blue, black, custom | Pantone match |
Not sure if silicone is right for you? See how it compares to other materials.
Feature | Silicone (VMQ) | EPDM | NBR | PTFE |
|---|---|---|---|---|
Temp Range | -60°C ~ 300°C | -40°C ~ 150°C | -30°C ~ 120°C | -200°C ~ 260°C |
Food Safe | ✓ Yes | ✗ No | ✗ No | ✓ Yes |
Medical Safe | ✓ Yes | ✗ No | ✗ No | ✓ Yes |
Oil Resistance | Fair | Poor | Excellent | Excellent |
Flexibility | Excellent | Good | Good | Hard |
Price | Medium | Low | Low | High |
Best For | Food, medical, high temp, dynamic seal | Outdoor, water systems | Oil, fuel systems | Strong chemicals |
Not sure which material fits? Ask our engineers →
HOW IT WORKS
Drawing, sample or even a photo — tell us quantity and application.
Detailed quote within 24h, with free design-for-manufacturing feedback.
Rapid prototype or sample mold to validate fit and function.
In-house mold making, then compression or LSR molding at scale.
100% inspection, certificates included, shipped worldwide.
Z.S.R Group is a leading custom silicone parts manufacturer and one-stop molding solution provider founded in 2007. We partner with brand owners, product managers, and engineers across the industrial, medical, and consumer goods sectors.
With strong manufacturing capabilities—including 38 compression molding machines, 12 LSR injection molding machines, 12 multi-color production lines, and advanced surface finishing—we ensure maximum flexibility, high precision, and easy scalability for your projects. We specialize in turning your drawings into precision parts with custom packaging, having successfully delivered over 15,000 projects worldwide.
At Z.S.R, we are fully committed to quality, compliance, and confidentiality. All our products meet global safety standards like FDA and LFGB, and we strictly protect your custom designs through Non-Disclosure Agreements (NDA).
We don’t just manufacture silicone parts—we engineer reliable, market-ready solutions from your first idea to mass production.
The accurate term is FDA compliant: the FDA does not approve or certify gaskets. Our food-contact compounds follow the permitted-ingredient list of FDA 21 CFR 177.2600, and every batch ships with a COA documenting extraction test results.
Standard silicone gaskets work from -60°C to +200°C. High-temp grades go up to +300°C — see our high-temperature gasket options for exhaust and sterilizer service.
Food grade gaskets meet FDA 21 CFR 177.2600 for food contact. Medical grade adds USP Class VI and ISO 10993 biocompatibility testing for pharma and bioprocessing equipment. Both are available platinum-cured, documented on our certification page.
Yes. We mold silicone filled with silver-aluminum, silver-glass, or nickel-graphite particles for EMI shielding enclosures and connector seals. Material selection depends on shielding effectiveness and environment — see the conductive silicone EMI shielding guide.
We make gaskets for JIS B 2404 / B 2220, ASME B16.20 / B16.21, DIN EN 1514, BS 10, and API 605 — plus fully custom drawings. Our standard flange gaskets cover the common series from stock tooling.
Full Face (FF) gaskets cover the whole flange with bolt holes, for flat or cast flanges. Raised Face (RF) gaskets only seal the inner raised ring, for higher-pressure bolted joints. Send your flange drawing and we will match the type, standard, and thickness.
Standard shapes: 100 pcs. Custom die-cut gaskets: 500 pcs. Bigger orders get better tooling cost sharing. Low-volume buyers can start with our custom die-cut service without tooling investment.
Samples: 3–5 days. Production: 7–15 days after sample approval. Need it faster? Ask about our 24-hour tooling service for urgent prototypes.
Standard silicone does not resist oil well. For oil or fuel, we recommend FVMQ (fluorosilicone) or FKM (Viton) compounds — tell us the media and temperature and our engineers will match the elastomer.
Our technical engineers will review your specs and reply with a full DFM (Design for Manufacturing) analysis & quote within 24 hours.