Professional Fluorosilicone (FVMQ) O-Ring Manufacturer & Supplier from China
- Payment Way: T/T, Western Union, Paypal
- Incoterm: EXW, FOB, CIF
- Shipping Way: By Air or Sea
- Manufacturer Place: Ningbo, China
- Delivery Time: 7 - 30 days
- Factory Status: Stocked for Sale
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Description
Fluorosilicone O-Rings, commonly referred to as FVMQ O-Rings, are circular seals with an O-shaped cross-section. They are made from fluorosilicone rubber, also known as FVMQ, which has a siloxane backbone consisting of silicon and oxygen atoms. In this structure, some methyl groups are replaced by trifluoropropyl groups to enhance chemical resistance.
This material retains the wide service temperature range of silicone, typically from –60°C to +200°C, while adding strong resistance to fuels, oils, acids, and solvents. When your application requires extreme temperature performance combined with fuel and solvent resistance, standard elastomers fall short, and fluorosilicone (FVMQ) O-rings are the engineered solution.
Specifications
- Material: Fluorosilicone / FVMQ
- Temperature Range / Rating: -60 °C (-76 °F) to 200°C (392 °F)
- Low Operating Temperature Limit: -60 °C (-76 °F)
- Maximum Operating Temperature Limit: 200°C (392 °F)
- Durometer Hardness Range: Shore A 40-90
- Standard Durometer Hardness: Shore A 70
- Less Used Duro Hardness: Shore A 50, 80
- Color: Blue (standard), custom color is available
- Outline: Round, square, rectangular, custom
- Cross Section Profile: Round (standard), square, X, D, T, custom
- Cross Section Width (CS): 0.5 to 20 mm (0.020 to 0.787 inch)
- Inside Diameter (ID): 0.7 to 2965 mm (0.028 to 116.732 inch)
- Standard Size: AS 568, BS 1806, ISO 3601, DIN 3771, JIS B 2401
- Shelf Life: About 10 years
- Compliance: RoHS, REACH, FDA (available upon request)
- Price Level: High
Performance Characteristics
The table below summarises the typical performance of standard Fluorosilicone (FVMQ) rubber across key environmental resistance, chemical compatibility, and mechanical attributes. Ratings are based on industry-standard evaluations: Excellent (recommended), Good (suitable with limitations), Fair (limited use), and Poor (not recommended).
Excellent
- Ozone
- Weather
Good
- Oils
Fair
- Chemicals
- Acid
- Flame
- Abrasion
- Compression Set
- Tensile Strength
Poor
- Water
- Alkali
- Steam
Material Data Sheet
The following table presents the physical properties and fluid resistance performance of our standard Fluorosilicone (FVMQ) O-ring material, formulated to meet ASTM D2000 M2FK706 specifications. All test results are based on cured compounds tested per the indicated ASTM methods, including heat ageing, compression set, and exposure to fluid C and IRM 903.
This is the Material Data Sheet (MDS) for our standard 70 Shore A Fluorosilicone (FVMQ) compound. Savvy Rubber also offers and routinely tests 40, 50, 60, 80, and 90 Shore A Fluorosilicone (FVMQ) formulations. If you require data for other hardness grades, please contact our sales team.
| FVMQ Shore A 70 Material Data Sheet | |||
|---|---|---|---|
| Test Standard: ASTM D2000 M2FK706 A19 B37 EF31 EO36 F19 | |||
| ORIGINAL PHYSICAL PROPERTIES | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Shore A | D2240 | 70±5 | 72 |
| Tensile Strength, MPa (psi) | D412 | 6 (870) min. | 9.36 (1358) |
| Ultimate Elongation, % | 150 min. | 258 | |
| Specific Gravity (g/cm³) | D297 | — | 1.37 |
| HEAT RESISTANCE 70H AT 225°C (A19) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Change, Points | D573 | -15 to +15 | +3 |
| Tensile Strength Change, % | -45 max. | -21 | |
| Ultimate Elongation Change, % | -45 max. | -15 | |
| COMPRESSION SET, 22H AT 175°C (B37) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Permanent Set, % | D395 | 25 max. | 13 |
| FLUID RESISTANCE, FUEL C, 70H AT 23°C (EF31) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Change, Points | D471 | -15 to 0 | -10 |
| Tensile Strength Change, % | -60 max. | -47 | |
| Ultimate Elongation Change, % | -50 max. | -46 | |
| Volume Change, % | 0 to +25 | +23 | |
| FLUID RESISTANCE IRM 903 OIL, 70H AT 150°C (EO36) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Change, Points | D471 | -10 to 0 | -7 |
| Tensile Strength Change, % | -35 max. | -21 | |
| Ultimate Elongation Change, % | -30 max. | -16 | |
| Volume Change, % | 0 to +10 | +6 | |
| LOW TEMPERATURE RESISTANCE (F19) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Non-brittle after 3 Min at -55°C | D2137 | PASS | PASS |
Test results are typical values for Savvy Rubber standard Shore A 70 Fluorosilicone (FVMQ) compound. Actual performance may vary based on operating conditions, fluid concentration, and exposure time. For critical applications, we recommend sample testing.
Features
Fluorosilicone (FVMQ) O-rings uniquely combine the wide temperature flexibility of silicone with the fuel and oil resistance of fluorocarbon elastomers. They operate reliably from –60°C to +200°C and resist degradation from aviation fuels, hydraulic fluids, solvents, acids, and many other aggressive chemicals.
While ideal for static sealing in aerospace, automotive fuel systems, and chemical handling equipment, these O-rings have limited abrasion resistance and are not recommended for dynamic or high-wear applications.
Applications
Fluorosilicone (FVMQ) O-rings are primarily used in aerospace and automotive applications where exposure to fuels, oils, and solvents is combined with extreme temperature requirements. Typical uses include fuel system seals, hydraulic actuators, engine compartments, and avionics enclosures.
They are also employed in specialised industrial and chemical handling equipment that demands reliable static sealing against aggressive media under wide thermal cycling conditions.
