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Procedure 3-4 Bolt Torque Required for Sealing Flanges [5-7] [Pg.169]

Ag = actual joint-contact area of gasket, in. b = effective gasket seating width, in. d = root diameter of threads, in. dm = pitch diameter of threads, in. [Pg.169]

G = diameter at location of gasket load reaction, in. M = external bending moment, in.-lb m = gasket factor N = gasket width, in. n = number of bolts [Pg.169]

Eg = modulus of elasticity of gasket material at temperature, psi P = internal pressure, psi [Pg.169]

F = restoring force of gasket (decreasing compression force) from initial bolting strain, lb [Pg.169]