Torque Value Calculator


Torque Value Calculator

Gasket Type


Durlon® Sheet Gaskets – General Notes:

a) Torque Values are in ft.-lbs. and assume new A193 Gr. B7 or B16 fasteners with 2H heavy hex nuts; with studs, nuts and the nut bearing surfaces lubricated with a never-seize type lubricant (k = 0.17).
b) All torque values are based on using a “calibrated” torque wrench.
c) All torque values in the chart above are based on using the tensile area of the fastener.
d) All torque values in chart are rounded to nearest 5 ft.-lbs.
e) Torque values are based using ASME B16.5/B16.47-2020 MAWP (Maximum Allowable Working Pressure) at ambient.

Min. Torque Values:
Min. torque values are based achieving 4,800 psi gasket stress without exceeding 80,000 psi bolt stress or PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.

Optimal Torque Values:
Optimal torque values are based on a target of 7,000 to 12,000 psi optimum gasket stress without exceeding 80,000 psi bolt stress or PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.

Max. Torque Values:
Max. torque values are based on; max allowable 15,000 psi gasket stress; PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding, or 80,000 psi bolt stress, whichever occurs 1st.
 

Durlon® CFG Gaskets – General Notes:

a) Torque Values are in ft.-lbs. and assume new A193 Gr. B7 or B16 fasteners with 2H heavy hex nuts; with studs, nuts and the nut bearing surfaces lubricated with a never-seize type lubricant (k = 0.17).
b) All torque values are based on using a “calibrated” torque wrench.
c) All torque values in the chart above are based on using the tensile area of the fastener.
d) All torque values in chart are rounded to nearest 5 ft.-lbs.
e) Torque values are based using ASME B16.5/B16.47-2020 MAWP (Maximum Allowable Working Pressure) at ambient.

Min. Torque Values:
Min. torque values are based achieving 4,800 psi gasket stress minimum without exceeding 80,000 psi bolt stress or PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.
 
Optimal Torque Values:
Optimal torque values are based on achieving a target of 8,000 to 15,000 psi optimum gasket stress without exceeding 80,000 psi bolt stress or below PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding .
 
Max. Torque Values:
Max. torque values are based on; max allowable 30,000 psi gasket stress; PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding; or 80,000 psi bolt stress, whichever occurs 1st.
 

Durlon® Kammprofile Gaskets – General Notes:

a) Torque Values are in ft.-lbs. and assume new A193 Gr. B7 or B16 fasteners with 2H heavy hex nuts; with studs, nuts and the nut bearing surfaces lubricated with a never-seize type lubricant (k = 0.17).
b) All torque values are based on using a “calibrated” torque wrench.
c) All torque values in the chart above are based on using the tensile area of the fastener.
d) All torque values in chart are rounded to nearest 5 ft.-lbs.
e) Torque values are based using ASME B16.5/B16.47-2020 MAWP (Maximum Allowable Working Pressure) at ambient.
 
Min. Torque Values:
Min. torque values are based achieving 8,000 psi gasket stress minimum without exceeding 80,000 psi bolt stress or PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.

Optimal Torque Values:
Optimal torque values are based on achieving a target of 15,000 to 25,000 psi optimum gasket stress without exceeding 80,000 psi bolt stress or below PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.

Max. Torque Values:
Max. torque values are based on; max allowable 40,000 psi gasket stress; PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding; or 80,000 psi bolt stress, whichever occurs 1st.
 

Durlon® Spiral Wound Gaskets – General Notes:

a) Torque Values are in ft.-lbs. and assume new A193 Gr. B7 or B16 fasteners with 2H heavy hex nuts; with studs, nuts and the nut bearing surfaces lubricated with a never-seize type lubricant (k = 0.17).
b) All torque values are based on using a “calibrated” torque wrench.
c) All torque values in the chart above are based on using the tensile area of the fastener.
d) All torque values in chart are rounded to nearest 5 ft.-lbs.
e) Torque values are based using ASME B16.5/B16.47-2020 MAWP (Maximum Allowable Working Pressure) at ambient.
 
Min. Torque Values:
Min. torque values are based achieving 12,500 psi gasket stress or at minimum above 10,000 psi gasket stress without exceeding 80,000 psi bolt stress or PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.

Optimal Torque Values:
Optimal torque values are based on 25,000 psi optimum gasket stress without exceeding 80,000 psi bolt stress or below PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding.

Max. Torque Values:
Max. torque values are based on; max allowable 40,000 psi gasket stress; PCC-1 2019 FEA SA105 Max. Stud Stress Before Flange Yielding; or 80,000 psi bolt stress, whichever occurs 1st.