{"product_id":"champion-big-lock-flange-gasket","title":"Champion Big-Lock Flange Gasket - Standard and High Temperature (73mm to 220mm)","description":"\u003cp\u003eA flanged joint is only as good as the gasket in it. \u003cstrong\u003eChampion Big-Lock flange gaskets\u003c\/strong\u003e are the sealing element between a Big-Lock stainless flange and whatever it bolts to: a dryer, a receiver, a filter housing, a compressor discharge. Sizes 73mm through 220mm, in standard and high temperature.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChoose your size and seal from the dropdowns above.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eModel Selection Chart\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eNominal\u003c\/th\u003e\n\u003cth\u003eSeal\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-73S\u003c\/td\u003e\n\u003ctd\u003e73mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-90S\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-115S\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-168S\u003c\/td\u003e\n\u003ctd\u003e168mm\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-220S\u003c\/td\u003e\n\u003ctd\u003e220mm\u003c\/td\u003e\n\u003ctd\u003e8 in\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-73H\u003c\/td\u003e\n\u003ctd\u003e73mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-90H\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-115H\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-168H\u003c\/td\u003e\n\u003ctd\u003e168mm\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-FG-220H\u003c\/td\u003e\n\u003ctd\u003e220mm\u003c\/td\u003e\n\u003ctd\u003e8 in\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eStandard or High Temperature\u003c\/h2\u003e\u003cp\u003eThe standard gasket covers the ordinary case: air downstream of an aftercooler or a dryer, at normal shop temperature. The high temperature gasket is for the places where the air has not been cooled yet.\u003c\/p\u003e\u003cp\u003eThe one that catches people out is \u003cstrong\u003ecompressor discharge before the aftercooler\u003c\/strong\u003e. Air leaving a rotary screw airend can be well over 180 F, and on a reciprocating machine higher still. If the flange is between the compressor and the aftercooler, it wants the high temperature gasket. Downstream of the cooler, standard is correct and considerably cheaper.\u003c\/p\u003e\u003cp\u003eIf you are not sure where the flange sits in the sequence, send us the layout. Getting this wrong does not fail immediately, which is the problem: a standard gasket on a hot line hardens, takes a set, and starts weeping months later.\u003c\/p\u003e\u003ch2\u003eKeep Spares, Because You Will Reopen the Joint\u003c\/h2\u003e\u003cp\u003eEvery time a flanged joint comes apart for service the gasket should be replaced. It has been compressed, it has taken the shape of the flange face, and it will not seal the same way twice. At $17 to $83 at list for a standard gasket this is the cheapest insurance in the system.\u003c\/p\u003e\u003cp\u003eThe sensible stocking policy on a plant with Big-Lock flanges is one spare gasket per flange size in use, kept with the maintenance spares rather than ordered when a joint is already open and the line is down.\u003c\/p\u003e\u003ch2\u003eShared Technical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem\u003c\/td\u003e\n\u003ctd\u003eChampion Big-Lock grooved mechanical coupling for aluminum pipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eSealing element for Big-Lock stainless steel flange connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSizes\u003c\/td\u003e\n\u003ctd\u003e73mm (2-1\/2 in) through 220mm (8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal Options\u003c\/td\u003e\n\u003ctd\u003eStandard, High Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplied With Flange Kits\u003c\/td\u003e\n\u003ctd\u003eYes. The SF and HF flange kits include a gasket. These are the replacements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eSpecification note.\u003c\/strong\u003e Champion's August 2026 price list publishes description, part number and list price for the Big-Lock range and nothing else: no material, no temperature band in degrees, no pressure rating, no weights and no dimensions. We have not found a Big-Lock gasket datasheet. Rather than publish figures from another manufacturer's grooved range and present them as Champion's, this listing states only what Champion publishes. If you need the actual temperature limit in writing before you order, ask us and we will get it from the factory.\u003c\/p\u003e\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\u003cp\u003eFlanged connections to refrigerated and desiccant dryers, receiver tank inlet and outlet flanges, filter and separator housings, compressor discharge, heat exchangers, and anywhere a Big-Lock aluminum main meets flanged equipment.\u003c\/p\u003e\u003ch2\u003eBuilding a Complete Big-Lock System\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-series-aluminum-compressed-air-pipe\"\u003eBig-Lock aluminum pipe, 73mm to 273mm\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-stainless-flange-kit\"\u003eStainless flange kits, standard and high temperature\u003c\/a\u003e, which include a gasket\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-flange-bolt-kit\"\u003eFlange bolt and gasket kits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-straight-union-coupling\"\u003eStraight union couplings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-coupling-seal\"\u003eReplacement coupling seals\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/aircompressorstore.com\/collections\/air-dryers\"\u003eAir dryers\u003c\/a\u003e, the most common thing on the other side of the flange\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOrdering Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll Big-Lock products and accessories are NO CANCEL \/ NO RETURN\u003c\/strong\u003e, per Champion's current price list.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreight:\u003c\/strong\u003e freight collect from Huntersville, NC 28078 or Las Vegas, NV 89113.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weights:\u003c\/strong\u003e Champion publishes no weight for any Big-Lock fitting, so no catalog weight is carried on these variants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotography:\u003c\/strong\u003e Champion publishes no photograph of the Big-Lock flange gaskets, so this listing is deliberately shown without an image rather than with a stand-in from another manufacturer's grooved range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Buy from Air Compressor Store\u003c\/h2\u003e\u003cp\u003eAir Compressor Store is an authorized Champion Pneumatic distributor. Tell us where the flange sits relative to the aftercooler and we will tell you which gasket it wants, and quote the spares at the same time so the shelf is stocked before the joint is opened.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDo the flange kits already include a gasket?\u003c\/h3\u003e\u003cp\u003eYes. The SF and HF stainless flange kits are supplied with a gasket and bolts. The gaskets on this page are for replacement, for spares, and for the second and subsequent times a joint is opened.\u003c\/p\u003e\u003ch3\u003eCan I reuse a gasket?\u003c\/h3\u003e\u003cp\u003eWe would not. It has already taken a compression set against that particular flange face. Replace it whenever the joint comes apart. The part costs less than the labour of going back to a weeping flange.\u003c\/p\u003e\u003ch3\u003eWhat temperature does the high temperature gasket actually take?\u003c\/h3\u003e\u003cp\u003eChampion publishes a standard and a high temperature option but no figure in degrees, and we have not found a datasheet that gives one. We are not going to invent a number. If the temperature limit is a design requirement rather than a preference, ask us and we will have the factory confirm it in writing before you order, which matters here because these are no-return items.\u003c\/p\u003e\u003ch3\u003eWhy do the 168mm and 220mm high temperature gaskets cost so much more than the smaller ones?\u003c\/h3\u003e\u003cp\u003eBecause that is what Champion's current price list prints. The standard gaskets step up sensibly across the range, $17, $19, $28, $59, $83. The high temperature versions step $31, $34, $49 and then jump to $500 and $593 at 168mm and 220mm. That is a much larger step than the pattern suggests and we have flagged it to Champion. We show list exactly as printed rather than guessing a correction. If you need either of those two parts, call us first and we will confirm the price with the factory before the order goes in.\u003c\/p\u003e\u003ch3\u003eIs there a 273mm gasket?\u003c\/h3\u003e\u003cp\u003eNot in the current price list. Most of the 273mm Big-Lock range is consult factory. Ask us and we will have it quoted.\u003c\/p\u003e","brand":"Champion","offers":[{"title":"73mm \/ 2.5 in \/ Standard","offer_id":67579442823443,"sku":"XCBL-FG-73S","price":13.77,"currency_code":"USD","in_stock":true},{"title":"73mm \/ 2.5 in \/ High Temperature","offer_id":67579442856211,"sku":"XCBL-FG-73H","price":25.11,"currency_code":"USD","in_stock":true},{"title":"90mm \/ 3 in \/ Standard","offer_id":67579442888979,"sku":"XCBL-FG-90S","price":15.39,"currency_code":"USD","in_stock":true},{"title":"90mm \/ 3 in \/ High Temperature","offer_id":67579442921747,"sku":"XCBL-FG-90H","price":27.54,"currency_code":"USD","in_stock":true},{"title":"115mm \/ 4 in \/ Standard","offer_id":67579442954515,"sku":"XCBL-FG-115S","price":22.68,"currency_code":"USD","in_stock":true},{"title":"115mm \/ 4 in \/ High Temperature","offer_id":67579442987283,"sku":"XCBL-FG-115H","price":39.69,"currency_code":"USD","in_stock":true},{"title":"168mm \/ 6 in \/ Standard","offer_id":67579443020051,"sku":"XCBL-FG-168S","price":47.79,"currency_code":"USD","in_stock":true},{"title":"168mm \/ 6 in \/ High Temperature","offer_id":67579443052819,"sku":"XCBL-FG-168H","price":405.0,"currency_code":"USD","in_stock":true},{"title":"220mm \/ 8 in \/ Standard","offer_id":67579443085587,"sku":"XCBL-FG-220S","price":67.23,"currency_code":"USD","in_stock":true},{"title":"220mm \/ 8 in \/ High Temperature","offer_id":67579443118355,"sku":"XCBL-FG-220H","price":480.33,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/champion-big-lock-flange-gasket","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}