ISO cords 1.80–7.00 mm: groove depth and width, radial and axial.
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Cord diameter per ISO 3601-1. Five groups: 1.80 / 2.65 / 3.55 / 5.30 / 7.00 mm.
t = 2.0 mm (+0.05), b = 3.6 mm (+0.25). Nominal squeeze about 25 % — not a plus-minus tolerance.
Calculator
Groove depth = cord × (1 − squeeze%). Groove width = cord × width factor (room for volume displacement and thermal expansion).
DESIGN ESTIMATE — VERIFY
Before use: Verify the final gland against ISO 3601-2:2025 or the manufacturer's design guide before production.
Validity: Standard metric cords 1.80-7.00 mm
Assumptions: Groove depth/width are a design-rule estimate, not an ISO 3601-2 gland lookup. Does not check application type (rod/piston/face), swell allowance, extrusion gap or surface finish.
ISO 3601-1 cord sizes · preliminary gland estimate (squeeze% / width factor) · Verify
Checked 2026-09-17
| Cord Ø (mm) | Groove depth @ 20% squeeze | Groove width | Fill (cross-section) |
|---|---|---|---|
| 1.80 | 1,44 mm | 2,52 mm | 70 % |
| 2.65 | 2,12 mm | 3,71 mm | 70 % |
| 3.55 | 2,84 mm | 4,97 mm | 70 % |
| 5.30 | 4,24 mm | 7,42 mm | 70 % |
| 7.00 | 5,6 mm | 9,8 mm | 70 % |
ISO 3601-1 defines 1.80 / 2.65 / 3.55 / 5.30 / 7.00 mm as standard metric cord diameters. Groove dimensions here are a design rule (squeeze% and width factor), not an ISO 3601-2 gland table.
