{"product_id":"ohlins-o-ring-61-6x2-4-nbr-70-00438-20","title":"Öhlins O-ring 61.6x2.4 nbr 70 – 00438-20","description":"\u003cp\u003eO-ring 61.6x2.4 nbr 70, Öhlins part number 00438-20. 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.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eInner Diameter 61.6 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00438-20\u003c\/li\u003e\n\u003cli\u003eCross Section 2.4 mm\u003c\/li\u003e\n\u003cli\u003eMaterial NBR 70\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eThis one measures 61.6 mm, 2.4 mm, NBR 70, and those figures are what separate it from the neighbouring numbers. Öhlins recommends replacing seals whenever the unit is opened, not only when it leaks. O-ring sizes are given as inner diameter and cross-section, and both have to match — a close size is not a match. Nitrile, Viton and PTFE behave differently with temperature, and Öhlins picks per position.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eThe tolerances here are the ones the unit was assembled to, not a pattern equivalent's interpretation of them. A damper that can be rebuilt is a damper that stays on the bike; that is the whole argument for original service parts. We can supply the whole position from the drawing rather than the single piece if that is easier. 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\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003e00438-20 is the Öhlins number for this position — the same one printed in the service documentation. Öhlins states inner diameter 61.6 mm, cross section 2.4 mm, material NBR 70 for this number, and those figures are the deciding ones. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job. 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\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eÖhlins recommends that its units are serviced by an authorised centre. We are one: rebuild, revalve and setup all happen in our own workshop.\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 00438-20\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 61.6 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 2.4 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":53646899544330,"sku":"00438-20","price":800.0,"currency_code":"XOF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00438-20_25ed3d22-ae9c-451d-ba7d-7767e6246d60.png?v=1788869381","url":"https:\/\/inter-pace.com\/en-ml\/products\/ohlins-o-ring-61-6x2-4-nbr-70-00438-20","provider":"Inter-Pace","version":"1.0","type":"link"}