PTFE sealing ring 257.42

Flat sealing ring made of PTFE, G 1/4, EN 837 Applications ■ Sealing of process connections with parallel threadsSpecial features ■ Large selection of materials and sizes ■ Versions: Flat sealing ring per EN 837-1 (and similar), WIKA sealing ring and edge sealing ring ■ For process connections with/without centring spigotDescription The model 910.17 contact sealings sit between the station- ary surfaces of a parallel screw connection. On reaching the prescribed tightening torque, the screw connection is sealed axially by the resulting surface pressure. The sealings are used for the sealing of threaded connec- tions at measuring locations and connection elements in apparatus and pipeline construction (e.g. valves, cocks, syphons, connection adapters, overpressure protectors). Sealings prevent the accidental leakage of gaseous or liquid media into the environment. It is recommended that, on each disassembly, the sealing is checked for damage or deformation and, if necessary, it is replaced.