A torque wrench should be used to tighten the compression bolts on vessels equipped with a flexible graphite gasket. Since used on various Parr high pressure vessels, the user must be sure that the torque wrench is fitted with an adapter which matches the bolts on which it will be used.

It may be possible to extend the useful life of a flexible graphite gasket by coating the sealing surfaces on both the vessel and the gasket with a silicone-base lubricant.

Max. pressure: 6000 psi

Torque: 40 feet-lbs.