... and so on. 2. Rubber spring Working Temperature: -40 to +150 degrees Description of rubber spring:1. Rubber spring material: NBR,SBR,NR,EPDM ... ,SILICONE,FPM and so on.2. Rubber spring Working Temperature: -40 ... to +150 degrees.3. Rubber spring Harness: 20,30,40,50, ...