{"product_id":"ohlins-o-ring-25x3-nbr70-00638-85","title":"Öhlins O-ring 25x3 NBR70 – 00638-85","description":"\u003cp\u003eO-ring 25x3 NBR70, Öhlins part number 00638-85. Size is given as inner diameter and cross-section; a close size is not a match.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInner Diameter 25 mm\u003c\/li\u003e\n\u003cli\u003eCross Section 3 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eMaterial NBR 70\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00638-85\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eDimensionally this is 25 mm, 3 mm, NBR 70, which is how it is told apart from the rest of the range. Dust seals keep grit off the running surface; once they are torn, the oil seal behind them has a short life. The groove does half the work: the ring only seals if the groove is clean and undamaged. Static seals and dynamic seals are not interchangeable even in the same size.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eThe part is identical to what Öhlins fits in production — same supplier, same specification. Öhlins lists this part under its own number in the service catalogue so a workshop can order exactly what it needs. Order by part number — descriptions repeat across sizes, numbers do not. The Öhlins exploded view names the number for each position; we can look it up if you do not have it.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003ePart number 00638-85 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Öhlins states inner diameter 25 mm, cross section 3 mm, material NBR 70 for this number, and those figures are the deciding ones. 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.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eA damper rebuild is workshop work: it needs the unit dismantled, the shim stack rebuilt in the correct order and the gas charge reset. We are an authorised Öhlins service centre and do exactly that in house — send us the unit or ask us to fit the part with your order.\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 00638-85\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 25 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 3 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMaterial:\u003c\/em\u003e NBR 70\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":53648930373898,"sku":"00638-85","price":0.76,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00638-85_c7eceeb3-3256-4cba-9ca8-0ca0b6d7d37f.png?v=1788872658","url":"https:\/\/inter-pace.com\/en-fr\/products\/ohlins-o-ring-25x3-nbr70-00638-85","provider":"Inter-Pace","version":"1.0","type":"link"}