... PU high elasticity 2.technology--PU foaming rigid foam parts for heat insulation,PU spare parts for heating system1.material-- soft PU with high elasticity2 ... and PDF.Molded Rubber Products:1, Material: NBR, CR, SBR, EPDM, IIR,NR, EP, SIL, FPM etc.2, Hardness: Between 30 ...