1.hardness 55-90/-5 shore A 2.tensile strength 5-10Mpa 3.elongation 300% Viton rubber gasketOur company produce rubber gaskets, rubber string, rubber product. Accord with ROHS and FDA.Material: NR CR,SR,EPDM,SBR,HNBR,Silicone,Viton,NBR.We have specialized moulds to make the department,The all right root is designed and produced according to the request of customer.