Press fitting for high-pressure pipes is fitted with conventional sealing ring and second ring made from material which expands when threshold temperature is exceeded, or from heat-resistant material

摘要

The press fitting (2) for high-pressure pipes (8) is fitted with a conventional sealing ring (4) and a second ring (10) which is made from a material which expands when a threshold temperature is exceeded. Alternatively this ring is made from heat-resistant material.