Specifies requirements for materials used in vulcanized rubber seals for cold drinking-water supplies (up to 50 degrees celsius), and drainage, sewerage and rainwater systems (continuous flow up to 45 degrees celsius and intermittent flow up to 95 degree
SANS 4633:2008 history
2008SANS 4633:2008 Rubber seals - Joint rings for water supply, drainage and sewerage pipelines - Specification for materials