{"product_id":"ohlins-o-ring-2-9x1-78-nbr70-00338-31","title":"Öhlins O-ring 2.9x1.78 NBR70 – 00338-31","description":"\u003cp\u003eO-ring 2.9x1.78 NBR70, Öhlins part number 00338-31. 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\u003eInner Diameter 2.9 mm\u003c\/li\u003e\n\u003cli\u003eCross Section 1.78 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00338-31\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eThe published figures are 2.9 mm, 1.78 mm, NBR 70. Measure the old part against them before ordering. Öhlins uses seals with a spring-loaded lip so they follow the shaft as it wears. Size is given as inner diameter and cross-section; a close size is not a match. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eSuspension is one of the few areas where the original part is genuinely the cheaper decision. Öhlins keeps service parts available for units long after they leave the current price list. Service parts are supplied per piece unless the description says otherwise. Order by part number. The dimensions below are the ones Öhlins publishes for it.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 00338-31 in this case. Check inner diameter 2.9 mm, cross section 1.78 mm, material NBR 70 against what you have removed; a close size is not the same part. Öhlins specifies seal compounds for temperature stability rather than for the lowest unit cost. 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 00338-31\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 2.9 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 1.78 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":53648740483338,"sku":"00338-31","price":0.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00338-31_75ef2ff9-2dfa-4319-ac13-ec16821d1aab.png?v=1788871674","url":"https:\/\/inter-pace.com\/products\/ohlins-o-ring-2-9x1-78-nbr70-00338-31","provider":"Inter-Pace","version":"1.0","type":"link"}