---
type: "o-ring"
dash_number: "035"
designation: "AS568-035"
cs_series: "004-050"
cs_series_name: "AS568 1/16 in series"
id_in: 2.239
id_mm: 56.87
cs_in: 0.07
cs_mm: 1.78
od_in: 2.379
od_mm: 60.43
id_tol_in: 0.0181
cs_tol_in: 0.0031
standard: "SAE AS568; MIL-G-5514G (public domain, inactive for new design)"
verified: "August 1, 2026"
url: https://shopmath.org/o-rings/as568-035
---

# AS568-035 O-Ring Size — ID, Cross-Section and OD

An AS568-035 o-ring has an inside diameter of 2.2390 in (56.870 mm) and a 0.0700 in (1.780 mm) cross-section, for an outside diameter of 2.3790 in (60.430 mm). It belongs to the AS568 1/16 in series band.

- **Dash number**: 035
- **Cross-section series**: AS568 1/16 in series
- **Inside diameter**: 2.2390 in (56.870 mm)
- **Cross-section**: 0.0700 in (1.780 mm)
- **Outside diameter**: 2.3790 in (60.430 mm)
- **Standard**: SAE AS568; MIL-G-5514G (public domain, inactive for new design)

## AS568-035 Dimensions and Tolerances

| Dimension | Inch | Millimetre |
| --- | --- | --- |
| Inside diameter (ID) | 2.2390 | 56.870 |
| Cross-section (CS) | 0.0700 | 1.780 |
| Outside diameter (OD) | 2.3790 | 60.430 |
| ID tolerance | ±0.0181 | ±0.460 |
| CS tolerance | ±0.0031 | ±0.080 |

_Outside diameter is computed as ID + 2 × CS; AS568 tabulates ID and CS._

## Gland Design for AS568-035

Static gland dimensions for the 0.070 in cross-section. Depth is the groove depth that produces the stated squeeze on a nominal ring.

| Application | Squeeze | Squeeze (in) | Gland depth (in) | Gland depth (mm) |
| --- | --- | --- | --- | --- |
| Static face seal | 19–32% | 0.0133 – 0.0224 | 0.0476 – 0.0567 | 1.209 – 1.440 |
| Static radial seal | 22–32% | 0.0154 – 0.0224 | 0.0476 – 0.0546 | 1.209 – 1.387 |

_Gland depth is computed as CS − (CS × squeeze %), then checked against the published design charts. Groove width, corner radius and back-up ring allowances are outside this dataset._

## O-Ring Sizes Closest to AS568-035

Nearest AS568 sizes by inside diameter — the substitutes to check when this one is out of stock.

| Size | ID (in) | ID (mm) | CS (in) | OD (in) |
| --- | --- | --- | --- | --- |
| [AS568-140](https://shopmath.org/o-rings/as568-140.md) | 2.2370 | 56.820 | 0.1030 | 2.4430 |
| [AS568-228](https://shopmath.org/o-rings/as568-228.md) | 2.2340 | 56.740 | 0.1390 | 2.5120 |
| [AS568-331](https://shopmath.org/o-rings/as568-331.md) | 2.2250 | 56.520 | 0.2100 | 2.6450 |
| [AS568-141](https://shopmath.org/o-rings/as568-141.md) | 2.3000 | 58.420 | 0.1030 | 2.5060 |
| [AS568-139](https://shopmath.org/o-rings/as568-139.md) | 2.1750 | 55.250 | 0.1030 | 2.3810 |
| [AS568-332](https://shopmath.org/o-rings/as568-332.md) | 2.3500 | 59.690 | 0.2100 | 2.7700 |

## Sources and Method for AS568-035

### AS568 dimensions

- **Source**: bd_warehouse o-ring_parameters.csv (Apache-2.0) and bckasper3/KasperCalc oring-sizes.js (MIT), agreeing on all 349 sizes; OD computed as ID + 2 x CS
- **Method**: computed+compiled
- **Verified against**: two independent open datasets agreeing on all 349 sizes; fabricated-dataset negative control passed; 21 checks total

### Gland design

- **Source**: MIL-G-5514G (public domain) gland design criteria; squeeze-percentage bands cross-read from Parker O-Ring Handbook ORD-5700 Design Charts 4-2/4-3 (verification only); depth = CS - CS x squeeze%
- **Method**: computed
- **Verified against**: computed depth band brackets the published design-chart band for every series

### Assumptions

- Dimensions are for a nominal, unstretched ring at room temperature. Installed stretch reduces cross-section.
- Gland figures are static-application only and assume a nominal ring; they carry no compound, temperature or pressure assumption.
- Dataset scope: A fabricated-dataset negative control is asserted against on every run. EXCLUDED: groove width, corner radius, diametral clearance, back-up ring widths, surface finish, all dynamic glands, the 900-series, and ISO 3601 metric sizes.

**Data last verified**: August 1, 2026

## Common Questions About the AS568-035 O-Ring

### What size is an AS568-035 o-ring?

AS568-035 has an inside diameter of 2.2390 in (56.870 mm) and a cross-section of 0.0700 in (1.780 mm), giving an outside diameter of 2.3790 in (60.430 mm).

### What is the o-ring size tolerance on AS568-035?

The AS568 tolerance on AS568-035 is ±0.0181 in (±0.460 mm) on the inside diameter and ±0.0031 in (±0.080 mm) on the cross-section.

### What groove depth does an AS568-035 o-ring need?

For a static face seal, an 0.070 in cross-section needs a gland depth of 0.0476 to 0.0567 in (1.209 to 1.440 mm), which puts the ring at 19–32% squeeze.

### What o-ring is closest in size to AS568-035?

The nearest AS568 sizes by inside diameter are AS568-140 (2.2370 in ID), AS568-228 (2.2340 in ID), AS568-331 (2.2250 in ID).

## Related pages

- Previous dash number: [AS568-034](https://shopmath.org/o-rings/as568-034.md) — 2.1140 in ID
- Next dash number: [AS568-036](https://shopmath.org/o-rings/as568-036.md) — 2.3640 in ID
- All o-ring sizes: [AS568 o-ring reference](https://shopmath.org/o-rings.md)
- Full size chart: [AS568 o-ring size chart](https://shopmath.org/charts/o-ring-sizes.md)

---

*Source: [ShopMath](https://shopmath.org/o-rings/as568-035) — data verified August 1, 2026. Reference data; verify against the governing standard before manufacture.*