Performance requirements for five types of seal made of thermosetting elastomeric compounds and one type of seal made of thermoplastic elastomeric compounds.
BS 2494:1990 history
0000 BS 2494:1990(1999)
1998BS 7874:1998 Method of test for microbiological deterioration of elastomeric seals for joints in pipework and pipelines
1990BS 2494:1990 Specification for elastomeric seals for joints in pipework and pipelines