UNE-EN 681-3/A1:2002 Elastomeric seals- Material requirements for joint seals in water and drainage applications- Part 3: Cellular materials of vulcanized rubber.
2006UNE-EN 681-3:2001/A2:2006 Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 3: Cellular materials of vulcanized rubber
2002UNE-EN 681-3/A1:2002 Elastomeric seals- Material requirements for joint seals in water and drainage applications- Part 3: Cellular materials of vulcanized rubber.
2001UNE-EN 681-3:2001 Elastomeric seals - Materials requirements for pipe joints seals used in water and drainage applications - Part 3: Cellular materials of vulcanized rubber.