NF T47-305-1/A2*NF EN 681-1/A2:2003 Elastomeric seals - Material requirements for pipe joints seals used in water and drainage applications - Part 1 : vulcanized rubber
2003NF T47-305-1/A2*NF EN 681-1/A2:2003 Elastomeric seals - Material requirements for pipe joints seals used in water and drainage applications - Part 1 : vulcanized rubber