{"product_id":"ohlins-o-ring-52x2-nbr70-00638-71","title":"Öhlins O-ring 52x2 NBR70 – 00638-71","description":"\u003cp\u003eO-ring 52x2 NBR70, Öhlins part number 00638-71. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 00638-71\u003c\/li\u003e\n\u003cli\u003eMaterial NBR 70\u003c\/li\u003e\n\u003cli\u003eCross Section 2 mm\u003c\/li\u003e\n\u003cli\u003eInner Diameter 52 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eThe published figures are 52 mm, 2 mm, NBR 70. Measure the old part against them before ordering. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job. Size is given as inner diameter and cross-section; a close size is not a match. Seal heads combine the oil seal, the dust seal and the bushing in one assembly.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eThe part number is the contract: it defines material, dimension and finish together. Öhlins manufactures service parts on the same lines as production parts — there is no second quality. For a full rebuild, the seal kit plus the wear parts is usually the sensible order. The exploded drawing for your unit names the number; if you do not have it, we do.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003ePart number 00638-71 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Öhlins states inner diameter 52 mm, cross section 2 mm, material NBR 70 for this number, and those figures are the deciding ones. Assembly grease matters — the wrong compound swells the seal and it fails early. Seals harden with heat and age even when the machine has not been ridden much.\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 00638-71\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 52 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 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":53648925917450,"sku":"00638-71","price":300.0,"currency_code":"AMD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00638-71_ec97dff0-9a72-4447-a83b-897bc98cbd3a.png?v=1788872643","url":"https:\/\/inter-pace.com\/en-am\/products\/ohlins-o-ring-52x2-nbr70-00638-71","provider":"Inter-Pace","version":"1.0","type":"link"}