Printed version of this standard is available at Library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
This British Standard specifies compositional and physical property requirements for four rubber compounds based either isobutane-isoprene (butyl) or halogenated isobutane-isoprene (halobutyl) of hardness range 50 IRHD to 80 IRHD, designated B50, B60, B70 and B80.