# Metric O-ring groove dimensions: depth, width and radius, 1.0 to 5.7 mm cross-sections

> How deep and wide is the groove for a metric O-ring (1.5, 2, 2.5, 3, 3.53, 5.33 mm cross-section)?

- Category: Hardware › Bearings, rails & motion
- Kind: Standard part
- Basis: Seals-Shop GmbH data sheet O-Ring 02, installation dimensions (radial and axial), nominal values in mm
- Page: https://xemstudio.com/objects/oring-grooves-metric/ · JSON: https://xemstudio.com/api/geometry?object=oring-grooves-metric · Plain text: https://xemstudio.com/objects/oring-grooves-metric/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- One maker's published recommendation for metric O-rings (Seals-Shop GmbH data sheet, "Einbaumasse, Standardempfehlungen"). The sheet does not name a standard, so this page does not call it ISO 3601-2; the cross-sections 1.78, 2.62, 3.53 and 5.33 are the AS568 metric sizes (preferred sizes on the sheet), the others are the metric series. A dash means the sheet gives no dynamic depth.
- Tolerances on the sheet: width b1 +0.25 mm, radial depth +0.1 mm, axial width b4 +0.2 mm, radius ±0.2 mm. The values above and the files are the nominal numbers. The sheet says the depths are based on the nominal cross-section and ignore the O-ring ID and its stretch; with support rings the radial width grows by the ring thickness (one ring for b2, two for b3, not tabulated here) and the radius is r = 0.25 ±0.2 mm.
- Files: for each of the 11 cross-sections, a piston-style sample ring with the static radial groove (50 mm ring, 30 mm hole, 4 mm lands) and a face plate (80 mm, 12 mm thick, groove outer Ø 60 mm) with the axial groove, true section at the nominal numbers, bottom corners rounded at the printed radius, mouth sharp. No piston-to-bore clearance is printed, so the ring is drawn at the bore diameter. Sample diameters are our layout, not the maker's.
- Some cross-sections on the sheet are not listed here (for example 1.2, 1.6, 2.4, 3.5, 4.5, 5.0); they follow the same pattern and the maker's full table has them.
- For the inch (AS568) series see the static, face-seal and reciprocating pages: those are from Parker's design charts. Metric and inch tables give slightly different squeeze, so do not mix one maker's depth with another's width.

## Sizes

| cross-section d2, mm | depth, dynamic radial t, mm | depth, static radial t / axial h, mm | radial groove width b1, mm | axial groove width b4, mm | bottom radius r, mm |
|---|---|---|---|---|---|
| 1 | - | 0.70 | 1.40 | 1.40 | 0.20 |
| 1.5 | 1.25 | 1.10 | 2.00 | 2.10 | 0.30 |
| 1.78 | 1.45 | 1.30 | 2.40 | 2.60 | 0.30 |
| 2 | 1.65 | 1.50 | 2.70 | 2.80 | 0.30 |
| 2.5 | 2.15 | 1.90 | 3.30 | 3.40 | 0.30 |
| 2.62 | 2.25 | 2.00 | 3.60 | 3.80 | 0.30 |
| 3 | 2.60 | 2.30 | 4.00 | 4.00 | 0.60 |
| 3.53 | 3.10 | 2.70 | 4.80 | 5.00 | 0.60 |
| 4 | 3.50 | 3.10 | 5.20 | 5.30 | 0.60 |
| 5.33 | 4.70 | 4.30 | 7.10 | 7.30 | 0.60 |
| 5.7 | 5.00 | 4.60 | 7.20 | 7.40 | 0.60 |

## Where the files are

- Seals-Shop GmbH: [Technical data sheet O-Ring 02: Einbaumasse, Standardempfehlungen (groove dimensions for radial and axial installation, mm)](https://www.seals-shop.com/content/medias/technical_datasheets/de/TDS_O-Ring_02.pdf) — web — Publisher's page; dimensions are facts

## Free STEP/STL (22 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/oring-grooves-metric/index.json

- groove-radial-piston-sample-cs1: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs1.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs1.stl) — 1 mm cross-section, static radial groove in a piston-style sample ring: depth 0.7 mm, width 1.4 mm, bottom radius 0.2 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs1: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs1.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs1.stl) — 1 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 0.7 mm, width 1.4 mm, bottom radius 0.2 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs1p5: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs1p5.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs1p5.stl) — 1.5 mm cross-section, static radial groove in a piston-style sample ring: depth 1.1 mm, width 2 mm, bottom radius 0.3 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs1p5: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs1p5.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs1p5.stl) — 1.5 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 1.1 mm, width 2.1 mm, bottom radius 0.3 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs1p78: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs1p78.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs1p78.stl) — 1.78 mm cross-section, static radial groove in a piston-style sample ring: depth 1.3 mm, width 2.4 mm, bottom radius 0.3 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs1p78: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs1p78.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs1p78.stl) — 1.78 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 1.3 mm, width 2.6 mm, bottom radius 0.3 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs2: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs2.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs2.stl) — 2 mm cross-section, static radial groove in a piston-style sample ring: depth 1.5 mm, width 2.7 mm, bottom radius 0.3 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs2: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs2.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs2.stl) — 2 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 1.5 mm, width 2.8 mm, bottom radius 0.3 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs2p5: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs2p5.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs2p5.stl) — 2.5 mm cross-section, static radial groove in a piston-style sample ring: depth 1.9 mm, width 3.3 mm, bottom radius 0.3 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs2p5: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs2p5.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs2p5.stl) — 2.5 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 1.9 mm, width 3.4 mm, bottom radius 0.3 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs2p62: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs2p62.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs2p62.stl) — 2.62 mm cross-section, static radial groove in a piston-style sample ring: depth 2 mm, width 3.6 mm, bottom radius 0.3 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs2p62: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs2p62.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs2p62.stl) — 2.62 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 2 mm, width 3.8 mm, bottom radius 0.3 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs3: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs3.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs3.stl) — 3 mm cross-section, static radial groove in a piston-style sample ring: depth 2.3 mm, width 4 mm, bottom radius 0.6 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs3: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs3.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs3.stl) — 3 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 2.3 mm, width 4 mm, bottom radius 0.6 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs3p53: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs3p53.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs3p53.stl) — 3.53 mm cross-section, static radial groove in a piston-style sample ring: depth 2.7 mm, width 4.8 mm, bottom radius 0.6 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs3p53: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs3p53.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs3p53.stl) — 3.53 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 2.7 mm, width 5 mm, bottom radius 0.6 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs4: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs4.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs4.stl) — 4 mm cross-section, static radial groove in a piston-style sample ring: depth 3.1 mm, width 5.2 mm, bottom radius 0.6 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs4: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs4.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs4.stl) — 4 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 3.1 mm, width 5.3 mm, bottom radius 0.6 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs5p33: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs5p33.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs5p33.stl) — 5.33 mm cross-section, static radial groove in a piston-style sample ring: depth 4.3 mm, width 7.1 mm, bottom radius 0.6 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs5p33: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs5p33.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs5p33.stl) — 5.33 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 4.3 mm, width 7.3 mm, bottom radius 0.6 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.
- groove-radial-piston-sample-cs5p7: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs5p7.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-radial-piston-sample-cs5p7.stl) — 5.7 mm cross-section, static radial groove in a piston-style sample ring: depth 4.6 mm, width 7.2 mm, bottom radius 0.6 mm. Ring Ø 50 mm, hole Ø 30 mm, 4 mm lands (sample layout). No clearance is printed, so the ring is drawn at the 50 mm bore with the groove cut from it.
- groove-face-plate-sample-cs5p7: [STEP](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs5p7.step) · [STL](https://xemstudio.com/files/hardware/oring-grooves-metric/groove-face-plate-sample-cs5p7.stl) — 5.7 mm cross-section, axial (face) groove in an 80 mm plate, 12 mm thick: depth 4.6 mm, width 7.4 mm, bottom radius 0.6 mm, groove outer Ø 60 mm (sample layout). Mouth sharp, walls square.

## Questions

**How deep is the groove for a 2.62 mm O-ring in a static radial seal?**

2.00 mm deep and 3.60 mm wide (bottom radius 0.30 mm); an axial groove is 2.00 deep and 3.80 wide.

**What groove for a 3 mm O-ring?**

Static depth 2.30 mm, radial width 4.00 mm, axial width 4.00 mm, radius 0.60 mm; a dynamic radial groove is 2.60 mm deep.

**What groove for a 1 mm O-ring?**

0.70 mm deep, 1.40 mm wide (radial and axial), radius 0.20 mm; the sheet gives no dynamic depth at 1 mm.

## Fits with

- [AS568 O-rings: all 349 standard sizes, -001 to -475](https://xemstudio.com/objects/as568-o-rings/)
- [O-rings, common metric sizes (ISO 3601)](https://xemstudio.com/objects/o-rings-metric/)
- [O-ring groove dimensions, static radial gland (piston and rod), AS568 cross-sections](https://xemstudio.com/objects/oring-gland-static-radial-as568/)
- [O-ring groove dimensions, reciprocating (dynamic) gland, piston and rod, AS568](https://xemstudio.com/objects/oring-gland-dynamic-reciprocating-as568/)