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Home / Tools / Gasket area & seating load

Gasket area & seating load calculator

Ring gasket contact area and the bolt load needed to seat it.

Gasket outside diameter (mm)

Gasket inside diameter (mm)

Seating stress y (MPa)

Number of bolts

How it's calculated. A = π/4 × (Do² − Di²), W = A × y. Typical y: spiral wound ≈ 69 MPa, CNAF sheet ≈ 11–25 MPa. Use the value from your gasket datasheet.

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Pipe weight

Weight per metre and total weight from outside diameter and wall thickness.

Pipe surface area

Outside surface area for painting, coating and insulation estimates.

Pipe volume & capacity

Internal volume and water capacity of a pipe run.