DEFSTAN 93-55/1(1989) : 1989
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BUTYL RUBBER TYPE: NBC
30-06-2001
12-01-2013
Covers requirements for high quality black butyl rubber mixes meant primarily for the manufacture of NBC overboots.
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