... ,acid-resistance 4.OEM/ODM ser rechargeable battery rubber acid injection 1.Appling for lead acid storage battery,UPS ... -bike battery acid filling machineHardness: Shore A40,50,60,70,80,90Color: black colorAdvantageGood Ozone resistance, aging resistance, high/low temperature ... meet PAHS,NP requirement.NBR,EPDM,FKM,ACM,IIR,Silicon rubber etc. are available.Material usage is based on the final ...