Fluorosilicone (FVMQ)
Selection Guide
Fluorosilicone is a family of copolymers containing fluorine for added chemical resistance. FVMQ O-rings, gaskets, & custom molded parts are widely used and can be compounded to meet a range of applications. The mechanical and physical properties of Fluorosilicone O-rings, gaskets, & custom molded parts are very similar to silicone. Fluorosilicone O-rings, gaskets, & custom molded parts offer improved flexibility and strength, better resistance to fuels and mineral oil, but reduced hot air resistance. Fluorosilicone O-rings, gaskets, & custom molded parts can generally be used as replacements for silicone where greater mechanical attributes are required. Fluorosilicone O-rings, gaskets, & custom molded parts are widely used in semiconductor ashing equipment due to Fluorosilicones resistance to oxygen plasma. Fluorosilicone O-rings, gaskets, & custom molded parts are also used in the aerospace and automotive industries as a replacement for fluorocarbon seals when low temperature performance is required.
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Common names include: FVMQ (Fluorosilicone) Trade Names: Silastic® LS, FSE
Features of Fluorosilicone
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Fluorosilicone O-rings, gaskets, & custom molded parts can be compounded to meet FDA, USP Class VI, USDA, 3-A and Canada AG
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Fluorosilicone O-rings, gaskets, & custom molded parts have excellent heat and compression resistance, excellent flexibility, good electrical insulator
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Fluorosilicone O-rings, gaskets, & custom molded parts have excellent resistance to oxidizing chemicals, animal and vegetable oils, fuels, aromatic and chlorinated solvents
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Fluorosilicone O-rings, gaskets, & custom molded parts have excellent resistance to ozone, sunlight, and weather
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Fluorosilicone O-rings, gaskets, & custom molded parts are physiologically neutral and good resistance to fungal and biological attack
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Fluorosilicone O-rings, gaskets, & custom molded parts have good resistance to diluted alkalies, diester oils, aliphatic and aromatic fluorocarbons
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Fluorosilicone O-rings, gaskets, & custom molded parts are available in multiple compounds to meet performance and cost requirements
Limitations of Fluorosilicone
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Fluorosilicone O-rings, gaskets, & custom molded parts are not recommended for dynamic applications since it has low strength, poor abrasion resistance and high gas permeability
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Fluorosilicone O-rings, gaskets, & custom molded parts have poor resistance to concentrated aromatic solvents, amines, esters and concentrated acids, brake fluids, and ketones
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Fluorosilicone O-rings, gaskets, & custom molded parts have a Service Temperature Range of (varies with application): -80°F to 350°F (-62°C to 177°C)
Please consult a TKF Tech Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
TKF Tech is a proud partner of Canyon Components, LLC and can provide Canyon Components materials, O-rings, and custom parts. Click here to see what Canyon has to offer.