{"product_id":"ohlins-o-ring-4-0x4-00638-17","title":"Öhlins O-ring 4.0x4 – 00638-17","description":"\u003cp\u003eO-ring 4.0x4, Öhlins part number 00638-17. O-ring sizes are given as inner diameter and cross-section, and both have to match — a close size is not a match.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 00638-17\u003c\/li\u003e\n\u003cli\u003eCross Section 4 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eInner Diameter 4.0 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eÖhlins publishes 4.0 mm, 4 mm for 00638-17 — the dimensions are the identity of the part. Nitrile, Viton and PTFE behave differently with temperature, and Öhlins picks per position. Seals harden with heat and age even when the machine has not been ridden much. Seal heads combine the oil seal, the dust seal and the bushing in one assembly.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eÖhlins keeps service parts available for units long after they leave the current price list. Öhlins supports its suspension with individual service parts, which is why a fifteen-year-old damper can still be rebuilt to specification. If you are between two sizes, send us the measurement and we will check it against the catalogue. Service parts are ordered per piece unless stated otherwise.\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 — 00638-17 in this case. The published dimensions are inner diameter 4.0 mm, cross section 4 mm — measure the old part against them if you are unsure. Öhlins specifies seal compounds for temperature stability rather than for the lowest unit cost. O-rings are single-use in a pressurised damper — they are replaced whenever the unit is opened.\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 00638-17\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 4.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 4 mm\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":53648916709642,"sku":"00638-17","price":1.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00638-17_500a893c-3d00-4fda-bf26-344f33222835.png?v=1788872607","url":"https:\/\/inter-pace.com\/en-zw\/products\/ohlins-o-ring-4-0x4-00638-17","provider":"Inter-Pace","version":"1.0","type":"link"}