... -25 shore A 3.Good sealing and pr construction expansion joint rubber seal strip1.The material can EPDM,NBR,SILICONE 2 ... ) EPDM foam parts.(7) NBR dense parts.(8) Silicone,EPDM molded parts.2.Function:Rubber seal could stop air, water and ... flexibility, good elasticityUsageSteamboat,yacht, motorboat ,train,subway,car construction expansion joint rubber seal strip