NF T47-305-4*NF EN 681-4:2000 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 4 : cast polyurethane sealing elements
2000NF T47-305-4*NF EN 681-4:2000 Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 4 : cast polyurethane sealing elements