Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber; German version EN 681-1:1996 + A1:1998— 19 стр.
Quality management and quality assurance standards - Part 1: Guidelines for selection and use (ISO 9000-1:1994); Trilingual version EN ISO 9000-1:1994— 47 стр.
Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber; German version EN 681-1:1996 + A1:1998 + A2:2002 + AC:2002 + A3:2005— 26 стр.