{"product_id":"ohlins-o-ring-50x2-5-fkm70-00338-51","title":"Öhlins O-ring 50x2.5 FKM70 – 00338-51","description":"\u003cp\u003eO-ring 50x2.5 FKM70, Öhlins part number 00338-51. Dust seals keep grit off the running surface; once they are torn, the oil seal behind them has a short life.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCross Section 2.5 mm\u003c\/li\u003e\n\u003cli\u003eInner Diameter 50 mm\u003c\/li\u003e\n\u003cli\u003eMaterial FKM 70\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00338-51\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eÖhlins gives it as 50 mm, 2.5 mm, FKM 70; nothing about that is approximate. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job. Replacing seals at service intervals is far cheaper than replacing what a failed seal damages.\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 supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Öhlins parts are unit-specific: a close dimension is not a substitute. If you are unsure which number your unit takes, send us the model and serial number of the damper and we will look it up.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003e00338-51 is the Öhlins number for this position — the same one printed in the service documentation. Check inner diameter 50 mm, cross section 2.5 mm, material FKM 70 against what you have removed; a close size is not the same part. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is. An O-ring seals by being squeezed into its groove; the cross-section is therefore as important as the diameter.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eAsk us about a full service: as an authorised Öhlins centre we strip, inspect, replace what is worn and set the unit back to its specification.\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 00338-51\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 50 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 2.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMaterial:\u003c\/em\u003e FKM 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":53646885880074,"sku":"00338-51","price":9.36,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00338-51_82f05934-3a48-45fb-9346-fdb941fb8067.png?v=1788869178","url":"https:\/\/inter-pace.com\/products\/ohlins-o-ring-50x2-5-fkm70-00338-51","provider":"Inter-Pace","version":"1.0","type":"link"}