NF T47-305-3*NF EN 681-3:2000 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 3 : cellular material of vulcanized rubber
2000NF T47-305-3*NF EN 681-3:2000 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 3 : cellular material of vulcanized rubber