What is the "OP" designation at the end of a FlexiFit part number?
"OP" is short for O-ring Position. Housings with G1-1/4" connections rely upon an o-ring to seal within the socket. The OP is the length from the o-ring to the inner flange of the connection. The length should match the depth of the socket on the vessel.
To learn more about OP see our full Knowledge Base article on this topic.
