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Fluorosilicone O-rings (FVMQ)
Fluorosilicone O rings are widely used elastomer seals that can meet a wide range of applications. The mechanical and physical properties are very similar to silicone rubber.
Fluorosilicone o rings offer improved fuels and mineral oil resistance but poor hot air resistance when compared with silicone. fluorosilicone o rings are commonly referred to as FVMQ orings. Fluorosilicone seals are widely used in semiconductor Ashing equipment for their resistance to oxygen plasma.
Fluorosilicone is often used in the Aerospace industry. This material is ideal for applications that require fuel or diester-based lubricant resistance up to 400°F. Fluorosilicone O-Rings are generally specified for aerospace use. However, due to their excellent fuel resistance and high temperature stability, Fluorosilicone is becoming increasingly popular for a wider range of sealing applications.
Fluorosilicone compounds offer good compression set and resilience properties. They are suitable for exposure to air, sunlight, Ozone, Chlorinated and aromatic hydrocarbons.
Eastern Seals offers a complete selection of both the standard AS568 o-ring and metric o-ring sizes. Our standard compound offers temperature ranges of -60°C (-75°F) to 204°C (400°F).
Fluorosilicone seals are often used in aerospace applications for fuel systems and systems requiring resistance to diester base lubricants to 175°C. Due to their poor physical characteristics they are normally only recommended for static applications.
Fluorosilicone is compatible with the following:
Dilute acids, alcohols, dilute alkalies, animal & vegetable oils, diester oils, some esters, fuel, halogenated solvents, LP Gases & Fuel oils, mineral oils, refrigerant ammonia, silicone oil, solvent resistance, ozone, flame resistant, radiation, sunlight, water and weather resistant.
Fluorosilicone is not recommended for the following:
Abrasion resistance, tear resistance, aldehydes, amines, brake fluids, some esters, ketones, solvents. Not suitable for Dynamic applications and Phosphate esters.
• Brake fluids, ketones, hydrazine, adelhydes, amines, ketones
• Poor abrasion resistance