Tool of the Trade Yes, it’s possible to use a small screwdriver or a piece of baling wire to remove rubber O-rings from hydraulic fittings or valves. But a set of $10 to $30 O-ring picks makes ...

For more than 60 years, engineers specifying seals and customers using them have accepted the arbitrary rule that the maximum amount O-rings will swell in most applications is a 25% change in ...

Source Automotive’s lead technician Richard Gates uses old-fashioned muscle power to operate a BHJ Products’ cutting tool while installing O-rings on a 24-valve 5.9L Cummins cylinder head.