“O” Ring Size 012

#6 OR 012 3/4” STUFFING BOX O-RINGS (10 PACK) FOR PSVC 500 1/2″ SCH 40 VALVE CHANGER 2FT. C/W STUFFING BOX HOUSING – 3/4″ VALVE AND 3/4″ X 1/2″ SCHD 40 SERVICE PIPE