Öhlins O-ring 135,76x1,78 NBR70
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number00438-72
CategoryO-Rings
Inner Diameter135.76 mm
Cross Section1.78 mm
MaterialNBR 70
Country of OriginSweden
DescriptionThe whole story▼

O-ring 135,76x1,78 NBR70, Öhlins part number 00438-72. Assembly grease matters — the wrong compound swells the seal and it fails early.

Key Features

  • Original Öhlins service part
  • Öhlins part number 00438-72
  • Cross Section 1.78 mm
  • Inner Diameter 135.76 mm
  • Material NBR 70

What It Is

Öhlins publishes 135.76 mm, 1.78 mm, NBR 70 for 00438-72 — the dimensions are the identity of the part. A seal that has taken a set no longer springs back and starts to weep. O-ring sizes are given as inner diameter and cross-section, and both have to match — a close size is not a match. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is.

Original Öhlins Part

An original part keeps the unit within its published specification; a near-equivalent quietly moves it. Öhlins lists this part under its own number in the service catalogue so a workshop can order exactly what it needs. Service parts are ordered per piece unless stated otherwise. 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.

Getting the Number Right

Öhlins identifies this position by the number 00438-72 in the exploded view for the unit it belongs to. inner diameter 135.76 mm, cross section 1.78 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. Static seals and dynamic seals are not interchangeable even in the same size.

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: 00438-72
  • Category: O-Rings
  • Inner Diameter: 135.76 mm
  • Cross Section: 1.78 mm
  • Material: NBR 70
  • Country of Origin: Sweden
07 · Support

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