... shore A 3.Good sealing and pr construction expansion joint rubber seal strip1.The material can EPDM,NBR,SILICONE ... dust-resistant.4.Application:Railcars,automobile,steamboat,industrial electrical equipment,building door& window,construction machinery,construction bridge and tunnel. Etc. ... good elasticityUsageSteamboat,yacht, motorboat ,train,subway,car construction expansion joint rubber seal strip