RS-B55 Pre Cured Black Bromobutyl made from bromobutyl polymer. It combines theproperties of good heat resistance, and very good resistance to corrosive acids and alkalies, while still retaining a moderate abrasion resistance. It has excellent resistance to ozone and outdoor weathering effects, and suitable for use with a range of chemicals including oxygenated solvents and hydraulic fluid. Suitable for most applications where high acid, chemical or temperature resistance is required. A rubber polymer blend with up to 70% bromobutyl and abrasion resistant rubber makes it suitable for many applications. Also shows low permeability to compressed gases. Available with a bonding layer.