FC 77, FLUOROCARBON Resistant O-Rings and Seals
FC 77, or fluorocarbon, is a type of synthetic rubber created by polymerizing a mixture of fluorine and hydrocarbon molecules. It is also known as perfluoroelastomer, fluorosilicone, and fluorinated elastomer. It is commonly used in the aerospace, automotive, and medical industries due to its chemical inertness, resistance to extreme temperatures, and strong resistance to many chemicals. When exposed to FC 77, rubber can suffer from swelling, softening, and cracking. These failures can occur due to the chemical makeup of the rubber, which can react with the fluorocarbon. The rubber’s strong affinity for hydrocarbons and fluorine can also cause it to degrade over time.
Buna-N (NBR, Nitrile, Buna)
Buna-N o-rings also referred to as NBR o-rings and Nitrile o-rings are the most widely used o-ring material in the word because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, and the default choice for basic applications. Buna-N o-rings are not recommended for exposure to sunlight, UV light, ozone and general outdoor weathering or hash chemicals, acids, keytones and many others.
B1000 Buna-N
- General purpose material
B1001 Buna-N
- For higher pressure applications
M1004 Buna-N
- Listed on the Qualified Products List (QPL)
- For higher pressure applications
Rubber Material Compatibility with FC 77, FLUOROCARBON
View some of our other material compatibility ratings with FC 77, FLUOROCARBON. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.
View Full Chemical Compatibility Guide
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