PU Spring 1) Hardness: Shore 85A -95A 2) Custom Formulations Available 3) Variety of Colors ISO9001:2008 PU SpringPEPSON PU Spring are designed primarily for applications where corrosion, vibration, and magnetism prevent the use of conventional steel springs. Also, PU Springs have proven to be the safest, most efficient and reliable compression springs for punching, stamping and drawing dies.As ...