Fluorosilicone (FVMQ) Gaskets
Manufacturer & Custom Solutions
Fluorosilicone (FVMQ) Gaskets
FVMQ fluorosilicone gaskets resist oils, fuels and solvents while keeping silicone's flexibility. Use them in aerospace fuel cells, automotive engine compartments and chemical processing equipment.
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
| Image | Product | Type | Short Info | Action |
|---|---|---|---|---|
 | 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 |
 | AS568 Standard Silicone Gaskets | Standard & Size | AS568 standard-size silicone gaskets for groove-based sealing applications. | View Details |
 | 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 |
 | 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 |
 | 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 7483 Silicone Gasket | Standard & Size | Silicone gaskets to ISO 7483 for ISO 7005 flanges, made for international projects and tenders. | View Details |
 | Custom Molded Silicone Gaskets | Standard & Size | Three-dimensional silicone gaskets made by compression or injection molding. For complex sealing shapes. | 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 |
 | Standard Flange Silicone Gaskets | Standard & Size | Silicone gaskets cut to fit pipe flanges. Matches ANSI, DIN and JIS bolt patterns. | 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 |
 | Tri-Clamp / Sanitary Silicone Gaskets | Standard & Size | Hygienic silicone gaskets for food and pharmaceutical pipe connections. CIP and SIP compatible. | 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 |
 | Metric Size Silicone Gaskets | Standard & Size | Metric dimension silicone gaskets for international equipment standards. | 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 |
 | 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 |
 | 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 |
 | Flame Retardant Silicone Gaskets | Special Function | Self-extinguishing silicone gaskets meeting UL 94 V-0. For fire-safety applications. | 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 |
FVMQ vs VMQ for Gaskets
Standard silicone (VMQ) and fluorosilicone (FVMQ) look the same and feel the same — but they behave very differently when fluids touch the seal:
Property | Standard Silicone (VMQ) | Fluorosilicone (FVMQ) |
|---|---|---|
Fuel Resistance | Poor — swells and softens quickly | Excellent — stays stable in gasoline, diesel, and jet fuel |
Oil Resistance | Poor — mineral oil makes it swell | Excellent — resists motor oil, lubricants, and grease |
Solvent Resistance | Poor to fair | Good to excellent (hydrocarbon solvents) |
Low-Temp Flexibility | Excellent (down to -60°C) | Excellent (down to -60°C) |
High-Temp Limit | Up to +230°C | Up to +200°C |
Weather / Ozone / UV | Excellent | Excellent |
Hot Water & Steam | Good | Poor — not recommended |
Mechanical Strength | Good | Average — lower tear strength |
Material Cost | Base level | 2–5 times higher than VMQ |
The rule is simple: if your gasket will touch fuel, oil, or solvents, VMQ will swell, go soft, and fail. FVMQ keeps silicone's wide temperature range and flexibility — and adds real resistance to fuels and oils. If there is no fluid contact, standard VMQ does the job at a lower cost. Pay for FVMQ only when the fluid demands it.
Fluid Compatibility for Gaskets
This chart shows how our FVMQ gaskets perform with common fluids. Ratings: Excellent = long service, minimal effect / Good = suitable for most uses / Fair = limited use, test first / Poor = not recommended.
Fluid | FVMQ Rating | Note |
|---|---|---|
Gasoline | Excellent | Very low swell, the core FVMQ strength |
Diesel | Excellent | Long-term immersion is fine |
Jet Fuel (Jet A, JP-5, JP-8) | Excellent | The original aerospace use for FVMQ |
Hydraulic Fluid (petroleum-based) | Good | Fine for most types; check for special synthetic fluids |
Motor Oil & Lubricants | Excellent | Minimal swelling, stable sealing force |
Coolant (glycol-based) | Good | Works well in most coolant mixtures |
Water (fresh or salt) | Fair | Long exposure can cause swelling |
Steam | Poor | Not recommended — use VMQ or EPDM instead |
One honest warning
FVMQ is weak against hot water, steam, ketones (like acetone), and non-petroleum brake fluids. For a pure water or steam line, standard VMQ is actually the better and cheaper choice. Tell us the exact fluid in your system — we will confirm compatibility before you order.
Typical FVMQ Gasket Applications
FVMQ gaskets go wherever fuels and oils meet wide temperatures:
Aerospace fuel flanges and tank access covers
the classic FVMQ job, from -60°C at altitude to hot-day ground service
Automotive transmission pans and oil seals
constant oil contact plus engine-bay heat
Engine valve covers and timing covers
hot oil mist and temperature cycling
Military vehicle fuel systems
meeting MIL-DTL-25988 / AMS-R-25988 requirements
Chemical processing equipment
pumps, valves, and flanges handling hydrocarbon solvents
Fuel pumps, sensors, and quick-connect fittings
small seals with zero room for failure
For these jobs, we supply FVMQ gaskets in Grades 40 to 80 (Shore A), cut from sheet or molded to your drawing.
What Is Fluorosilicone (FVMQ)?
Fluorosilicone — FVMQ for short — is a special member of the silicone rubber family. Its base is the same silicon-oxygen backbone as standard silicone, but with fluorine-containing side groups (trifluoropropyl groups) bonded into the polymer chain. That small chemical change makes a big practical difference: the material keeps the cold flexibility and heat stability of silicone, and gains the fuel and oil resistance of a fluorocarbon rubber. Engineers often call it the "hybrid" between VMQ and FKM — and it is the only elastomer that stays flexible at -60°C while sealing jet fuel.
Key Properties of Fluorosilicone
