Öhlins O-ring 20.3x2.4 NBR 70
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number00438-54
CategoryO-Rings
Inner Diameter20.3 mm
Cross Section2.4 mm
MaterialNBR 70
Country of OriginSweden
DescriptionThe whole story▼

O-ring 20.3x2.4 NBR 70, Öhlins part number 00438-54. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter.

Key Features

  • Material NBR 70
  • Inner Diameter 20.3 mm
  • Cross Section 2.4 mm
  • Original Öhlins service part
  • Öhlins part number 00438-54

What It Is

Öhlins publishes 20.3 mm, 2.4 mm, NBR 70 for 00438-54 — the dimensions are the identity of the part. An oil seal that has hardened lets the shaft pass oil past it, and the damping fades long before the leak becomes visible. The groove does half the work: the ring only seals if the groove is clean and undamaged. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is.

Genuine Service Part

Öhlins keeps service parts available for units long after they leave the current price list. Öhlins is one of the few suspension makers that still supplies every position in the exploded view as a single part. If the unit is already apart, compare the published dimensions with the part in your hand. Ask us before ordering if you are unsure: a wrong part in a pressurised unit is an expensive lesson.

Identifying the Right Part

00438-54 is the Öhlins number for this position — the same one printed in the service documentation. inner diameter 20.3 mm, cross section 2.4 mm, material NBR 70 is what distinguishes this number from its neighbours in the range. Size is given as inner diameter and cross-section; a close size is not a match. O-rings are single-use in a pressurised damper — they are replaced whenever the unit is opened.

Fitting and Setup Service

Fitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.

Specifications

  • Brand: Öhlins
  • Part Number: 00438-54
  • Category: O-Rings
  • Inner Diameter: 20.3 mm
  • Cross Section: 2.4 mm
  • Material: NBR 70
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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