Products / Simplex Rupture Discs

Simplex Rupture Discs are galvalume-coated steel discs used with Simplex cap nails and fasteners to raise the rupture resistance of softer materials such as base sheets and insulation; the catalog sells them in cartons of 1,000. The product page publishes rupture values for a 2-inch rupture plate from test report 100-97 under Dade County Protocol PA 117(B), across base sheets from several makers, ranging from 76.5 lbf (U.S. Intec Bondable Base) to 406.0 lbf (GS Roofing PolySMS Base), obtained under laboratory conditions with a suitable safety factor to be applied; it also has a heading for 3-inch results.