O-Ring Groove Designer

1Application

Motion

Pressure from

Groove outline

Design guideline ⓘ Medium Back-up rings ⓘ

2O-ring

Size standard Cross-section filter

Size

Inner diameter ID ID tolerance ± Cross-section CS CS tolerance ±

Material Hardness

3Hardware & groove

Bore Ø Groove Ø Piston Ø

Rod Ø Groove Ø Housing bore Ø

Bore length Bore width Corner radius

Gland depth Diametral clearance

Groove mean Ø

Centreline length Centreline width Centreline corner radius

Undercut angle ⓘ (°)

Fitting undercut Ø F

The O-ring sits on the undercut of the fitting and is squeezed into the conical seat of the port. Select the size by tube OD in the O-ring section; the port and fitting dimensions are listed in the results.

Groove outer Ø

Outer length Outer width Outer corner radius

Groove depth Flange gap ⓘ

Groove width Groove bottom radius

Tolerances

Diameters ± Depth ± Width ±

Include full eccentricity (parts offset by the radial clearance) ⓘ

Each diameter of the gland is taken as nominal ± the diameter tolerance; the depth tolerance applies to the face groove depth and to rectangular radial glands.

4Operating conditions

Pressure Volume swell ⓘ % Min. temperature Max. temperature

Volume swell from the fluid (from the compound's fluid-resistance data). Thermal expansion of the O-ring is added at the maximum temperature.

Compression (nominal)

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Gland cross-section

free O-ring

Groove outline

Results

Recommended groove for this O-ring

Groove guideline library

O-ring size library

Click a row to use that O-ring.

Material library

Typical values for general-purpose compounds. Always check the data sheet of the actual compound and its fluid compatibility.

Method, assumptions & sources