ISO 6448:1985

Rubber seals — Joint rings used for petroleum product supply pipes and fittings — Specification for material

Specifies requirements, but does not apply to the mentioned product with an aromatic content higher than 30 % and liquids polluted by petroleum traces. Other requirements shall be specified in national standards. Iron, steel, copper, plastics are included as pipeline materials. Not included are joint rings made of cellular rubbers. 2 tables with general and optional requirements.