Many of the top recognized oil, gas and chemical producers are using heavy duty belleville style spring washers to help them maintain safe operating environments and reduce maintenance costs.  We manufacture “flange bolting” bellevilles from H13 tool grade, stainless and nickel alloy steels for a wide range of bolt sizes that are used to “live-load” pipe flange connections.

Thermal expansion and contraction as well as vibration from process flow can cause bolted connections to loosen and allow the flange gaskets and seals to leak.  The spring energy stored in the bellevilles will compensate for the bolt stretch or “creep” helping to keep the flanged connection tight and leak free. This in turn reduces the amount of time a maintenance department spends to regularly tighten and torque their flange bolting and allows them to focus their energy in other critical areas. We offer bellevilles capable of service in cryogenic applications as low as -330 degrees F and others capable of withstanding high temperature environments up to +1100 degrees F. The stainless and Inconel grades of steel are capable of withstanding extended exposure in caustic and corrosive environments.