... :10-25 shore A 3.Good sealing and pr construction expansion joint rubber seal strip1.The material can EPDM,NBR,SILICONE 2 ... ) NBR dense parts.(8) Silicone,EPDM molded parts.2.Function:Rubber seal could stop air, water and dust enter the machine ... , good flexibility, good elasticityUsageSteamboat,yacht, motorboat ,train,subway,car construction expansion joint rubber seal strip