{"product_id":"ohlins-o-ring-33x5-nbr70-low-temp-00638-78","title":"Öhlins O-ring 33x5 NBR70 Low temp – 00638-78","description":"\u003cp\u003eO-ring 33x5 NBR70 Low temp, Öhlins part number 00638-78. A leaking damper is not a cosmetic problem: it is a damper that has stopped controlling the wheel.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eMaterial NBR 70\u003c\/li\u003e\n\u003cli\u003eCross Section 5 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00638-78\u003c\/li\u003e\n\u003cli\u003eInner Diameter 33 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003eÖhlins publishes 33 mm, 5 mm, NBR 70 for 00638-78 — the dimensions are the identity of the part. A ring that has taken a set no longer springs back and starts to weep under pressure. Dust seals keep grit off the running surface; once they are torn, the oil seal behind them has a short life. A leaking damper is not a cosmetic problem: it is a damper that has stopped controlling the wheel.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eÖhlins keeps service parts available for units long after they leave the current price list. The part number is the contract: it defines material, dimension and finish together. Order by part number. The dimensions below are the ones Öhlins publishes for it. For a full rebuild, the seal kit plus the wear parts is usually the sensible order.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eOrder under 00638-78. Where several sizes share a description, only the number separates them. inner diameter 33 mm, cross section 5 mm, material NBR 70 is what distinguishes this number from its neighbours in the range. Öhlins uses seals with a spring-loaded lip so they follow the shaft as it wears. Seal heads combine the oil seal, the dust seal and the bushing in one assembly.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eFitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.\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 00638-78\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 33 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 5 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":53648928276746,"sku":"00638-78","price":43.62,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00638-78_137fdce3-234a-4cef-a6da-8ba5a0b4be26.png?v=1788872650","url":"https:\/\/inter-pace.com\/en-dk\/products\/ohlins-o-ring-33x5-nbr70-low-temp-00638-78","provider":"Inter-Pace","version":"1.0","type":"link"}