{"product_id":"ohlins-o-ring-18-1x1-6-00338-78","title":"Öhlins O-ring 18.1x1.6 – 00338-78","description":"\u003cp\u003eO-ring 18.1x1.6, Öhlins part number 00338-78. Seal heads combine the oil seal, the dust seal and the bushing in one assembly.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInner Diameter 18.1 mm\u003c\/li\u003e\n\u003cli\u003eCross Section 1.6 mm\u003c\/li\u003e\n\u003cli\u003eMaterial NBR 70\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00338-78\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eAt 18.1 mm, 1.6 mm, NBR 70 it fits one position only; the next size up carries a different number. A seal that has taken a set no longer springs back and starts to weep. Öhlins specifies the compound by position: NBR where oil is the concern, FKM where heat is. A ring that has taken a set no longer springs back and starts to weep under pressure.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eParts remain available years after a unit leaves the current price list, which is unusual in this trade. The part is identical to what Öhlins fits in production — same supplier, same specification. Order by part number — descriptions repeat across sizes, numbers do not. The exploded drawing for your unit names the number; if you do not have it, we do.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eOrder under 00338-78. Where several sizes share a description, only the number separates them. Öhlins states inner diameter 18.1 mm, cross section 1.6 mm, material NBR 70 for this number, and those figures are the deciding ones. Seal kits gather the pieces one rebuild needs, which avoids a second order mid-job. 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\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 00338-78\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 18.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCross Section:\u003c\/em\u003e 1.6 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":53646887649546,"sku":"00338-78","price":5.41,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/00338-78_f9e52023-0f45-4211-b79d-a109ac091210.png?v=1788869214","url":"https:\/\/inter-pace.com\/en-fo\/products\/ohlins-o-ring-18-1x1-6-00338-78","provider":"Inter-Pace","version":"1.0","type":"link"}