The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 00638-51 |
| Category | O-Rings |
| Inner Diameter | 72.75 mm |
| Cross Section | 1.78 mm |
| Material | NBR 70 |
| Country of Origin | Sweden |
DescriptionThe whole story▼
O-Ring 72.75x1.78 NBR70, Öhlins Artikelnummer 00638-51. Der Werkstoff muss zur Öltemperatur passen, sonst härtet der Ring aus.
Wichtigste Merkmale
- Innendurchmesser 72.75 mm
- Original Öhlins Serviceteil
- Öhlins Artikelnummer 00638-51
- Werkstoff NBR 70
- Schnurstärke 1.78 mm
Funktion
Maßlich ist das Teil mit Innendurchmesser 72.75 mm, Schnurstärke 1.78 mm, Werkstoff NBR 70 beschrieben. Die Nut gibt die Verpressung vor; zu wenig dichtet nicht, zu viel zerstört den Ring. Sie ist das Teil, das bei einer Überholung am häufigsten getauscht wird. Beim Einbau wird der Ring geölt, damit er beim Fügen nicht einreißt.
Echtes Serviceteil
Öhlins hält Positionen oft über Modellgenerationen hinweg gleich, tauscht aber ohne Ankündigung Werkstoffe. Ein Dämpfer ist kein Verschleißteil im Ganzen, sondern eine Baugruppe aus Teilen, die einzeln getauscht werden können. Wir sind offizieller Öhlins-Vertriebspartner und beziehen die Teile direkt. Die Angaben stammen aus der aktuellen Öhlins-Serviceliste, nicht aus älteren Katalogen.
Der Werkstoff ist auf die Öltemperatur abgestimmt, die im Betrieb entsteht. Wer die Einheit selbst zerlegt, sollte die Nummern vor dem Ausbau notieren; hinterher sind sie schwer zu lesen. Die Vorspannung der Lippe kommt von einer eingelegten Ringfeder. Eine Überholung ist günstiger als ein neues Federbein, solange die tragenden Teile in Ordnung sind.
Die richtige Nummer finden
Ist die Einheit bereits geöffnet, lohnt der Abgleich der Maße unten mit dem Teil in der Hand, bevor 00638-51 bestellt wird. Ein Dichtkopf fasst Wellendichtring, Staubdichtung und Führung in einer Baugruppe zusammen.
Einbau und Abstimmung
Als autorisiertes Öhlins-Service-Center bauen wir das Teil auf Wunsch ein und stellen die Einheit anschließend auf Fahrer und Einsatz ein. Eine Anfrage genügt.
Technische Daten
- Marke: Öhlins
- Artikelnummer: 00638-51
- Kategorie: O-Ringe
- Innendurchmesser: 72.75 mm
- Schnurstärke: 1.78 mm
- Werkstoff: NBR 70
- Herkunftsland: Schweden
Questions, one topic at a time.
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Register your return by email with your order number before sending anything back, and we’ll send you the return instructions. Please note: returns that aren’t registered in advance can’t be accepted.
The quickest way is to place a new order for the size you need and register a return for the original by email — just let us know it’s an exchange.
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Yes. We’re an authorised dealer, so every product is 100% original and comes with the full manufacturer warranty.
Yes. Everything we sell is genuine and comes with the manufacturer’s warranty, on top of your statutory rights. Keep your invoice as proof of purchase and contact us if you ever need to make a claim — we’ll help you through it.
Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.