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ONORM EN 681-1:2007
Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber (Austrian Standard)
This standard specifies requirements for materials used in vulcanized rubber supply (up to 50øC); hot portable and non-portable water supply (up to 110øC) and drainage, sewerage and rainwater systems (continuous flow up to 45øC and intermitted flow up to
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Austrian Standards Institute [on]