UNE-EN 681-2:2001 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 2: Thermoplastic elastomers.
2006UNE-EN 681-2:2001/A2:2006 Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 2: Thermoplastic elastomers
2002UNE-EN 681-2/A1:2002 Elastomeric seals- Material requrements for pipe joint seals used in water and drainage applications-Part 2: Thermoplastic elastomers.
2001UNE-EN 681-2:2001 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 2: Thermoplastic elastomers.