Öhlins O-ring 27x4 NBR70The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 00338-70 |
| Category | O-Rings |
| Inner Diameter | 27 mm |
| Cross Section | 4 mm |
| Material | NBR 70 |
| Country of Origin | Sweden |
DescriptionThe whole story▼
O-ring 27x4 NBR70, Öhlins part number 00338-70. Nitrile, Viton and PTFE behave differently with temperature, and Öhlins picks per position.
Key Features
- Inner Diameter 27 mm
- Cross Section 4 mm
- Material NBR 70
- Original Öhlins service part
- Öhlins part number 00338-70
Function
00338-70 is the 27 mm, 4 mm, NBR 70 version — Öhlins lists each size separately. O-ring sizes are given as inner diameter and cross-section, and both have to match — a close size is not a match. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job. Size is given as inner diameter and cross-section; a close size is not a match.
Genuine Service Part
Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Öhlins manufactures service parts on the same lines as production parts — there is no second quality. Öhlins parts are unit-specific: a close dimension is not a substitute. Service parts are supplied per piece unless the description says otherwise.
Identifying the Right Part
Part number 00338-70 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Check inner diameter 27 mm, cross section 4 mm, material NBR 70 against what you have removed; a close size is not the same part. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is.
Fitting and Setup Service
We are an authorised Öhlins service centre, so you do not have to source the tools and the nitrogen: send us the damper and we rebuild it with the correct parts and the correct setting.
Specifications
- Brand: Öhlins
- Part Number: 00338-70
- Category: O-Rings
- Inner Diameter: 27 mm
- Cross Section: 4 mm
- Material: NBR 70
- Country of Origin: Sweden
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