{"product_id":"ohlins-o-ring-37-4x1-78-nbr70-00438-94","title":"Öhlins O-ring 37.4x1.78 NBR70 – 00438-94","description":"\u003cp\u003eO-ring 37.4x1.78 NBR70, Öhlins part number 00438-94. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is.\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 1.78 mm\u003c\/li\u003e\n\u003cli\u003eInner Diameter 37.4 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00438-94\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eAt 37.4 mm, 1.78 mm, NBR 70 it fits one position only; the next size up carries a different number. 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. Nitrile, Viton and PTFE behave differently with temperature, and Öhlins picks per position. Öhlins uses seals with a spring-loaded lip so they follow the shaft as it wears.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eBuying the individual part rather than a complete assembly is what makes servicing an Öhlins unit worthwhile. Parts remain available years after a unit leaves the current price list, which is unusual in this trade. Order by part number. The dimensions below are the ones Öhlins publishes for it. We can supply the whole position from the drawing rather than the single piece if that is easier.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003e00438-94 is the Öhlins number for this position — the same one printed in the service documentation. Öhlins states inner diameter 37.4 mm, cross section 1.78 mm, material NBR 70 for this number, and those figures are the deciding ones. The groove does half the work: the ring only seals if the groove is clean and undamaged. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job.\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 00438-94\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 37.4 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":53646903476490,"sku":"00438-94","price":9.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00438-94_b045637d-9d1d-4275-9e35-292f44dc9d4c.png?v=1788869451","url":"https:\/\/inter-pace.com\/en-ca\/products\/ohlins-o-ring-37-4x1-78-nbr70-00438-94","provider":"Inter-Pace","version":"1.0","type":"link"}