1.material:EPDM,SBR,SR,NR,NBR,CR,FPM 2.USE:shock ... .payment: T/T,L/C,D/P O RINGdurable in liquid material,mineral oil,lubricant and other different environmentmateria:SR,NBR,EPDM ... ,NR,SBRcolor:available in any color,according to customer's requirementworking ...