CHLORO-BUTYL RUBBER (GRADE 60) BLACK TO DEF STAN 93-86.
BROMO BUTYL RUBBER BS3227:2003 GRADE B60.
BS3227 B60 BUTYL RUBBER (56-65) (60 IRHD).
BUTYL RUBBER TO BS3227 B50 BLACK (50 IRHD).
BUTYL RUBBER 40 (B 40) (40 IRHD).
B.BUTYL RUBBER 50 TO BS 3227:2003 GRADE B50. (50 IRHD).
BUTYL RUBBER 60 (60 IRHD).
Visit the ACF Gaskets (Gasket Manufacturers) website for more information on BUTYL RUBBER GRADES