NF T47-305-3/A2*NF EN 681-3/A2:2005 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 3 : cellular materials of vulcanized rubber
2005NF T47-305-3/A2*NF EN 681-3/A2:2005 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 3 : cellular materials of vulcanized rubber