{"product_id":"ohlins-o-ring-39x2-nbr-90-00638-97","title":"Öhlins O-ring 39x2 NBR 90 – 00638-97","description":"\u003cp\u003eO-ring 39x2 NBR 90, Öhlins part number 00638-97. Öhlins recommends replacing seals whenever the unit is opened, not only when it leaks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaterial NBR 90\u003c\/li\u003e\n\u003cli\u003eInner Diameter 39 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00638-97\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eCross Section 2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eDimensionally this is 39 mm, 2 mm, NBR 90, which is how it is told apart from the rest of the range. Seals are the part of a damper that decides whether it holds its gas charge and its oil, and they are the usual reason a unit ends up on the bench. Seals harden with heat and age even when the machine has not been ridden much. The dust seal does the hard work: it keeps the grit that would score the shaft away from the oil seal.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eÖhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. The part is identical to what Öhlins fits in production — same supplier, same specification. The Öhlins exploded view names the number for each position; we can look it up if you do not have it. Send us the model and serial number of your unit and we will confirm the position before you order.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003e00638-97 is the Öhlins number for this position — the same one printed in the service documentation. inner diameter 39 mm, cross section 2 mm, material NBR 90 is what distinguishes this number from its neighbours in the range. A seal that has taken a set no longer springs back and starts to weep. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eAsk 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.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eBrand:\u003c\/em\u003e Öhlins\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePart Number:\u003c\/em\u003e 00638-97\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e O-Rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 39 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMaterial:\u003c\/em\u003e NBR 90\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCountry of Origin:\u003c\/em\u003e Sweden\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Öhlins","offers":[{"title":"Default Title","offer_id":53648932995338,"sku":"00638-97","price":3400.0,"currency_code":"XOF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00638-97_8b066b95-86b6-40d8-b008-f0639809d60c.png?v=1788872671","url":"https:\/\/inter-pace.com\/en-sn\/products\/ohlins-o-ring-39x2-nbr-90-00638-97","provider":"Inter-Pace","version":"1.0","type":"link"}