Back-up rings: POM
Sealing element: PTFE
Pressure (MPa): ≤ 40
Temperature (°C): -30 to +105
Running speed (m/s): ≤ 1.5
Hydraulic oils acc. to DIN 51524 Part 1 – 3, lubricating oils, mineral oil based lubricating greases, highly non-flammable hydraulic fluids HFA, HFB, HFC acc. to VDMA 24317
The KK71 is a four piece double acting heavy duty compact seal which consists of one PTFE bronze profile ring , one elastomeric nitrile rubber pre-load sealing element and two thermoplastic back-up rings.
The elastomeric ring should be assembled into the one-piece piston firstly , and then special mixture PTFE should be assembled with a special assembly tool.
The KK 71 seal is frequently used across a wide range of applications, Mining equipment , construction machinery and earth moving equipment. For special applications that require high temperatures , piston seal is being manufactured with FKM pre-load component , pure PTFE back-up rings and special mixture PTFE profile ring.