Dyneon BRE 7231X Terpolymer of tetrafluoroethylene, propylene and vinylidene fluoride 3M-Dyneon Fluoropolymers SEALANT >> Pre-formed tape / Gasket Dyneon offers base resistant fluoroelastomers for a variety of applications and markets. Dyneon™ BREs are effectively used in Automotive Powertrain seals such as radial shaft seals and head gaskets where resistance to amine containing lubricating fluids is required. Dy n e o n™ Base Resistant Elastomer BRE 7231X Terpolymer of tetrafluoroethylene, propylene and vinylidene fluoride Improved resistance to new types of amine containing automotive fluids and other basic chemicals improved low temperature sealing performance Application targets: bonded shaft seals and other molded goods Excellent processability and metal adhesion Terpolymer of tetrafluoroethylene, propylene and vinylidene fluoride. Used in automotive powertrain seals such as radial shaft seals and head gaskets. Offers improved resistance to new types of amine containing automotive fluids and other basic chemicals. Provides very good processability and metal adhesion, and improved low temperature sealing performance.