Gasket Factor Calculator

✖Total Fastener Force produces applied flange pressure to compress and seal the gasket.ⓘ Total Fastener Force [W]			+10% -10%
✖Inside Area of Gasket is the space inside the shape. It's a measure of 2-D space, and the units for area are squared ("length squared").ⓘ Inside Area of Gasket [A₂]			+10% -10%
✖Test Pressure is based on the maximum design pressure of the system, and for a pressure vessel based on the maximum allowable working pressure (MAWP) of the vessel.ⓘ Test Pressure [P_test]			+10% -10%
✖Gasket Area is the area of contact the gasket is placed to seal between two flange connections.ⓘ Gasket Area [A₁]			+10% -10%

✖Gasket Factor the 'm' value, referred to as the maintenance factor, is the compressive load required on the gasket to maintain the seal once pressurised.ⓘ Gasket Factor [m]

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Formula

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Gasket Factor

Formula

`"m" = ("W"-"A"_{"2"}*"P"_{"test"})/("A"_{"1"}*"P"_{"test"})`

Example

`"2.380989"=("97N"-"13m²"*"0.39Pa")/("99m²"*"0.39Pa")`

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Download Design of Pressure Vessel Subjected to Internal Pressure Formulas PDF

Gasket Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure)
m = (W-A₂*P_test)/(A₁*P_test)
This formula uses 5 Variables

Variables Used

Gasket Factor - Gasket Factor the 'm' value, referred to as the maintenance factor, is the compressive load required on the gasket to maintain the seal once pressurised.
Total Fastener Force - (Measured in Newton) - Total Fastener Force produces applied flange pressure to compress and seal the gasket.
Inside Area of Gasket - (Measured in Square Meter) - Inside Area of Gasket is the space inside the shape. It's a measure of 2-D space, and the units for area are squared ("length squared").
Test Pressure - (Measured in Pascal) - Test Pressure is based on the maximum design pressure of the system, and for a pressure vessel based on the maximum allowable working pressure (MAWP) of the vessel.
Gasket Area - (Measured in Square Meter) - Gasket Area is the area of contact the gasket is placed to seal between two flange connections.

STEP 1: Convert Input(s) to Base Unit

Total Fastener Force: 97 Newton --> 97 Newton No Conversion Required
Inside Area of Gasket: 13 Square Meter --> 13 Square Meter No Conversion Required
Test Pressure: 0.39 Pascal --> 0.39 Pascal No Conversion Required
Gasket Area: 99 Square Meter --> 99 Square Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

m = (W-A₂*P_test)/(A₁*P_test) --> (97-13*0.39)/(99*0.39)

Evaluating ... ...

m = 2.38098938098938

STEP 3: Convert Result to Output's Unit

2.38098938098938 --> No Conversion Required

FINAL ANSWER

2.38098938098938 ≈ 2.380989 <-- Gasket Factor

(Calculation completed in 00.004 seconds)

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< 17 Design of Pressure Vessel Subjected to Internal Pressure Calculators

Coefficient Value for Thickness of Flange

Go Coefficient Value for Thickness of Flange = ((1)/((0.3)+(1.5*Maximum Bolt Loads*Radial Distance)/(Hydrostatic End Force in Gasket Seal*Diameter of Gasket at Load Reaction)))

Gasket Factor

Go Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure)

Longitudinal Stress (Axial Stress) in Cylindrical Shell

Go Longitudinal Stress for Cylindrical Shell = (Internal Pressure given Longitudinal Stress*Mean Diameter of Shell)/4*Thickness of Cylindrical Shell

Internal Presure of Vessel given Longitudinal Stress

Go Internal Pressure given Longitudinal Stress = (4*Longitudinal Stress*Thickness of Cylindrical Shell)/(Mean Diameter of Shell)

Wall Thickness of Pressure Vessel given Longitudinal Stress

Go Thickness of Shell for Longitudinal Stress = (Internal Pressure for Vessel*Mean Diameter of Shell)/(4*Longitudinal Stress)

Wall Thickness of Cylindrical Shell Given Hoop Stress

Go Thickness of Shell for Hoop Stress = (2*Internal Pressure given Hoop Stress*Mean Diameter of Shell)/Circumferential Stress

Internal Pressure of Cylindrical Vessel given Hoop Stress

Go Internal Pressure given Hoop Stress = (2*Circumferential Stress*Thickness of Cylindrical Shell)/(Mean Diameter of Shell)

Circumferential Stress (Hoop Stress) in Cylinderical Shell

Go Circumferential Stress = (Internal Pressure for Vessel*Mean Diameter of Shell)/2*Thickness of Cylindrical Shell

Maximum Bolt Spacing

Go Maximum Bolt Spacing = 2*Nominal Bolt Diameter+(6*Thickness of Flange/Gasket Factor+0.5)

Hydrostatic End Force using Design Pressure

Go Hydrostatic End Force = (pi/4)*(Radial Distance^2)*Internal Pressure

Diameter of Gasket at Load Reaction

Go Diameter of Gasket at Load Reaction = Outside Diameter of Gasket-2*Effective Gasket Seating Width

Effective Thickness of Conical Head

Go Effective Thickness = Thickness of Conical Head*(cos(Apex Angle))

Hoop Strain

Go Hoop Strain = (Final Length-Initial Length)/(Initial Length)

Radial Distance from Gasket Load Reaction to Bolt Circle

Go Radial Distance = (Bolt Circle Diameter-Diameter of Gasket at Load Reaction)/2

Bolt Circle Diameter

Go Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12

Outside Diameter of Flange using Bolt Diameter

Go Outside Flange Diameter = Bolt Circle Diameter+2*Nominal Bolt Diameter+12

Minimum Bolt Spacing

Go Minimum Bolt Spacing = 2.5*Nominal Bolt Diameter

Gasket Factor Formula

Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure)
m = (W-A₂*P_test)/(A₁*P_test)

What is Gasket?

Gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression.

How to Calculate Gasket Factor?

Gasket Factor calculator uses Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure) to calculate the Gasket Factor, Gasket Factor is the ratio of residual unit stress on the gasket to internal pressure of the system. Gasket Factor is denoted by m symbol.

How to calculate Gasket Factor using this online calculator? To use this online calculator for Gasket Factor, enter Total Fastener Force (W), Inside Area of Gasket (A₂), Test Pressure (P_test) & Gasket Area (A₁) and hit the calculate button. Here is how the Gasket Factor calculation can be explained with given input values -> 2.318182 = (97-13*0.39)/(99*0.39).

FAQ

What is Gasket Factor?

Gasket Factor is the ratio of residual unit stress on the gasket to internal pressure of the system and is represented as m = (W-A₂*P_test)/(A₁*P_test) or Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure). Total Fastener Force produces applied flange pressure to compress and seal the gasket, Inside Area of Gasket is the space inside the shape. It's a measure of 2-D space, and the units for area are squared ("length squared"), Test Pressure is based on the maximum design pressure of the system, and for a pressure vessel based on the maximum allowable working pressure (MAWP) of the vessel & Gasket Area is the area of contact the gasket is placed to seal between two flange connections.

How to calculate Gasket Factor?

Gasket Factor is the ratio of residual unit stress on the gasket to internal pressure of the system is calculated using Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure). To calculate Gasket Factor, you need Total Fastener Force (W), Inside Area of Gasket (A₂), Test Pressure (P_test) & Gasket Area (A₁). With our tool, you need to enter the respective value for Total Fastener Force, Inside Area of Gasket, Test Pressure & Gasket Area and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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