SAE O-Ring Boss Adapter

SAE O-Ring Boss Adapter

SAE O-Ring Boss Adapter, or ORB adapter, under SAE J1926-1 and ISO 11296-1, has adantage of being able to be tightened mecahnically before being sealed. 

SAE ORB adapter has the male end with a straight thread and an o-ring, and the female end with a straight thread, a machined surface, and a chamfered area to accept the o-ring. The connection is established when the male and female threads engaged together. The seal takes place when the o-ring is squeezed into the chamfer. Since the threads do not seal the connection, it can be rotated before it finally seals while maintaining strong connection.