Powered By Hicheng
Silicon O-rings are primarily made from silicone rubber, a synthetic polymer composed of silicon, oxygen, carbon, and hydrogen. It is categorized into two main types:
VMQ (Virgin MQ Silicone): The most common type, offering excellent general-purpose performance.
FVMQ (Fluorinated Silicone): Enhanced with fluorine for improved chemical resistance, especially against fuels and oils.
Silicone rubber is non-toxic, odorless, and has good biocompatibility, making it suitable for food, medical, and pharmaceutical applications.
Basic information
Parameter | VMQ Silicone O-Ring | FVMQ Fluorosilicone O-Ring |
Material Type | Virgin Silicone Rubber | Fluorinated Silicone Rubber |
Temperature Range | -60°C to 230°C (-76°F to 446°F) | -55°C to 250°C (-67°F to 482°F) |
Hardness (Shore A) | 40–80 | 50–80 |
Tensile Strength | ≥7 MPa (1015 PSI) | ≥8 MPa (1160 PSI) |
Elongation at Break | ≥300% | ≥250% |
Compression Set (22hrs @ 175°C) | ≤25% | ≤20% |
Chemical Resistance | Water, steam, ozone, UV | Fuels, oils, solvents, chemicals |
Standards Compliance | FDA, USP Class VI, ISO 10993 | FDA, USP Class VI, ISO 10993 |
Color Options | Translucent, black, custom | Black, brown, custom |
Key Performance Characteristics
Temperature Resistance:
Can withstand a wide range: from -60°C (-76°F) to 230°C (446°F) (VMQ) or up to 250°C (482°F) (FVMQ).
Maintains flexibility and sealing integrity in extreme hot or cold environments.
Chemical Resistance:
Resistant to water, steam, ozone, UV light, and mild acids/bases.
Not recommended for use with oils, solvents, or fuels (FVMQ offers better resistance here).
Electrical Insulation: Excellent dielectric properties, making it ideal for electrical and electronic applications.
Compression Set: Low compression set (permanent deformation after compression), ensuring long-term sealing performance.
Typical Applications
Medical & Pharmaceutical: Syringes, catheters, respiratory equipment, and drug delivery systems.
Food & Beverage: Seals in coffee machines, ovens, refrigerators, and food processing equipment.
Automotive: Gaskets for engine components, cooling systems, and lighting (especially high-temperature areas).
Electronics: Seals for connectors, sensors, and outdoor enclosures (protection against dust and moisture).
Aerospace: Sealing systems for aircraft engines and hydraulic systems (resistant to extreme temperatures).
 |  |  |
If you have any questions or needs about the product, please fill in the following form and we wll contact you as soon as possible.
Founded in 2012, We are located in the beautiful city----Qingdao China,IS09001:2015 certificated.
No. 306, 3rd Floor, Building 4, No. 6, Changcheng South Road, Chengyang District, Qingdao City