{"product_id":"comp-cams-valve-stem-seals-positive-stop-ptfe-530-guide-3-8-valve-co505-16","title":"COMP CAMS VALVE STEM SEALS POSITIVE STOP PTFE .530\" GUIDE 3\/8\" VALVE CO505-16","description":"\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003e\n\u003cstrong\u003eCOMP CAMS VALVE STEM SEALS POSITIVE STOP PTFE .530\" GUIDE 3\/8\" VALVE CO505-16 \u003c\/strong\u003e\u003cdiv\u003eCOMP Cams offers a complete line of valve seals, from the stock GM O-rings to the positive-stop PTFE seals. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The O-ring seals use the standard retainer and oil splash shield. The umbrella seals are normally used when a larger-than-stock diameter spring is used. In the case of a double spring, the positive stop PTFE seals are used. For triple-spring applications, use the smaller-diameter Viton® seals. \u003cstrong\u003eSpecs:\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eValve Stem Diameter:0.375 in.\u003cdiv\u003eValve Stem Seal Type:Positive stop\u003c\/div\u003e\n\u003cdiv\u003eValve Stem Seal Material:PTFE\u003c\/div\u003e\n\u003cdiv\u003eMachine Work Required:Yes\u003c\/div\u003e\n\u003cdiv\u003eValve Guide Diameter (in):0.530 in.\u003c\/div\u003e\n\u003cdiv\u003eQuantity:Sold as a set of 16.\u003c\/div\u003e\n\u003cdiv\u003eNotes:Requires machining the top of the valve guide with a special .530 in. diameter cutter.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cbr\u003e.\u003cbr\u003e\u003cbr\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":44549539660087,"sku":"CO505-16","price":75.85,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/61840.jpg?v=1780465951","url":"https:\/\/enginemaster.com.au\/products\/comp-cams-valve-stem-seals-positive-stop-ptfe-530-guide-3-8-valve-co505-16","provider":"Engine Master","version":"1.0","type":"link"}