Backup rings are used for both static and dynamic fluid power applications and prevent the migration or extrusion of an O-ring in the gap as pressurization and de-pressurization/pressure cycling occur. The profile shape of the backup rings is usually rectangular but may also be concave at the face mating with the O-ring.
In a sealing application, backup rings provide added extrusion resistance, and prevent damage to O-rings and seals when subjected to high pressures, larger extrusion gaps, and/or high temperatures. These PTFE backup rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and many acids. Use them to extend the life of your O-rings and improve their performance in high-pressure applications.
DF-101 has excellent electrical and non-adhesive properties, high chemical stability, and temperature resistance (from -250℃ to +260℃ ). Due to its high elasticity, DF-101 has a good sealing performance.
It can be adopted in the electric or electronic industry's insulation, foodstuff or chemical machinery's adhesive resistance, and as static sealing parts or corrosion resistant gaskets.