... -25 shore A 3.Good sealing and pr construction expansion joint rubber seal strip1.The material can EPDM,NBR,SILICONE 2.Easy ... dense parts.(8) Silicone,EPDM molded parts.2.Function:Rubber seal could stop air, water and dust enter the machine system ... flexibility, good elasticityUsageSteamboat,yacht, motorboat ,train,subway,car construction expansion joint rubber seal strip