NF T47-305-3/A1*NF EN 681-3/A1:2003 Elastomeric seals - Material requirements for joint seals used in water and drainage applications - Part 3 : cellular materials of vulcanized rubber
2003NF T47-305-3/A1*NF EN 681-3/A1:2003 Elastomeric seals - Material requirements for joint seals used in water and drainage applications - Part 3 : cellular materials of vulcanized rubber