... 40 to +150 degrees Description of rubber spring:1. Rubber spring material: NBR,SBR,NR,EPDM,SILICONE,FPM ... 60,70,80 shores A are available.4. Rubber spring Working field: Water, lube, oil, industrial, ... 1) 100% Virgin material.2) Reasonable price with top quality3) Professional service and production4) Test qualitied5 ... designer and sales dep. Will work hard with you together and find a best solution based ...