Öhlins O-ring 50x2.5 FKM70Öhlins O-ring 50x2.5 FKM70
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number00338-51
CategoryO-Rings
Inner Diameter50 mm
Cross Section2.5 mm
MaterialFKM 70
Country of OriginSweden
DescriptionThe whole story▼

O-ring 50x2.5 FKM70, Öhlins part number 00338-51. Dust seals keep grit off the running surface; once they are torn, the oil seal behind them has a short life.

Key Features

  • Cross Section 2.5 mm
  • Inner Diameter 50 mm
  • Material FKM 70
  • Öhlins part number 00338-51
  • Original Öhlins service part

Function

Öhlins gives it as 50 mm, 2.5 mm, FKM 70; nothing about that is approximate. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job. Replacing seals at service intervals is far cheaper than replacing what a failed seal damages.

Why the Original

Suspension is one of the few areas where the original part is genuinely the cheaper decision. Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Öhlins parts are unit-specific: a close dimension is not a substitute. If you are unsure which number your unit takes, send us the model and serial number of the damper and we will look it up.

How to Be Sure It Fits

00338-51 is the Öhlins number for this position — the same one printed in the service documentation. Check inner diameter 50 mm, cross section 2.5 mm, material FKM 70 against what you have removed; a close size is not the same part. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter.

Fitting and Setup Service

Ask us about a full service: as an authorised Öhlins centre we strip, inspect, replace what is worn and set the unit back to its specification.

Specifications

  • Brand: Öhlins
  • Part Number: 00338-51
  • Category: O-Rings
  • Inner Diameter: 50 mm
  • Cross Section: 2.5 mm
  • Material: FKM 70
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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