{"product_id":"ohlins-seal-head-10-29-25-21817-01","title":"Öhlins Seal head 10\/29\/25 – 21817-01","description":"\u003cp\u003eSeal head 10\/29\/25, Öhlins part number 21817-01. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eOuter Diameter 29 mm\u003c\/li\u003e\n\u003cli\u003eThickness 25 mm\u003c\/li\u003e\n\u003cli\u003eInner Diameter 10 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21817-01\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003eÖhlins publishes 10 mm, 29 mm, 25 mm for 21817-01 — the dimensions are the identity of the part. A seal that has taken a set no longer springs back and starts to weep. Dust seals keep grit off the running surface; once they are torn, the oil seal behind them has a short life. Seal heads combine the oil seal, the dust seal and the bushing in one assembly.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eÖhlins publishes dimensions for its service parts so a workshop can verify before it fits. Öhlins numbers every position so a workshop can order precisely what it needs, not a whole assembly. Tell us the damper's model designation and year and we will match the number for you. Service parts are supplied per piece unless the description says otherwise.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003e21817-01 is the Öhlins number for this position — the same one printed in the service documentation. inner diameter 10 mm, outer diameter 29 mm, thickness 25 mm is what distinguishes this number from its neighbours in the range. A weeping damper almost always starts here. A seal head combines the oil seal, the dust seal and the shaft bushing in one serviceable assembly.\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 21817-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Seal Heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 10 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eOuter Diameter:\u003c\/em\u003e 29 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eThickness:\u003c\/em\u003e 25 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":53652873871626,"sku":"21817-01","price":16.18,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21817-01_dbf347ff-4de8-47d2-8fc9-bccaa400ad44.png?v=1788880295","url":"https:\/\/inter-pace.com\/products\/ohlins-seal-head-10-29-25-21817-01","provider":"Inter-Pace","version":"1.0","type":"link"}