O-ring envelope gasket
O-ring forming sealing washer
O-ring insert
O-ring port contour sheath and seal
O-ring seal flat face fitting
O-ring seal for rock bit bearings
O-ring seal seating arrangement for rotary plug valve
O.h.e.g.
Object disposed in a fluid flow and having a selected...
Object engaging tool and method of manipulating object using...
Object location detector
Object propelling means and valve therefor
Object protection from hollow charges and method for the...
Object provided with a weighting layer or mass
Object such as a sealing ring composed of elastic material...
Objective lens assembly for a portable missile launcher
Oblate friction rock stabilizer and installation lubricating...
Obscurant device
Obstruction of flow to improve flow mix
Obtaining argon using a three-column system for the...