{"product_id":"lochinvar-a-o-smith-100330219-gasket-kit","title":"Lochinvar \u0026 A.O. Smith 100330219 Gasket Kit","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong\u003eLochinvar \u0026amp; A.O. Smith 100330219 4\" Flue Gasket Kit\u003c\/strong\u003e is an OEM replacement flue outlet gasket designed to restore the seal at the vent connection on compatible commercial heating equipment.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLochinvar factory replacement-parts documentation identifies part \u003cstrong\u003e100330219\u003c\/strong\u003e as the \u003cstrong\u003eflue outlet gasket\u003c\/strong\u003e for KBX0400 and KBX0500 models, with additional applications in corresponding APX0400-0500 and AWH0400-0500 equipment.\u003c\/p\u003e\n\u003cp\u003eThe gasket is designed for a \u003cstrong\u003e4-inch flue connection\u003c\/strong\u003e and helps maintain the proper seal where the flue outlet interfaces with the vent assembly. When replacing a \u003cstrong\u003eLochinvar flue gasket\u003c\/strong\u003e, inspect the mating surfaces, flue outlet, and clamp components for damage, corrosion, or residue that could prevent proper seating.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003eboiler flue gasket\u003c\/strong\u003e should be selected by exact equipment model and part number rather than vent diameter alone. Always verify the complete equipment model and serial number before ordering.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM \u003cstrong\u003eLochinvar 100330219 flue gasket\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned for a \u003cstrong\u003e4-inch flue outlet\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory-listed for \u003cstrong\u003eKBX0400 and KBX0500\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlso listed for compatible \u003cstrong\u003eAPX0400-0500 and AWH0400-0500\u003c\/strong\u003e equipment\u003c\/li\u003e\n\u003cli\u003eHelps maintain the required seal between the flue outlet and vent connection\u003c\/li\u003e\n\u003cli\u003eReplaces discontinued \u003cstrong\u003eLochinvar GKT20003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat equipment uses the Lochinvar 100330219 flue gasket?\u003c\/strong\u003e\u003cbr\u003eLochinvar factory parts documentation lists 100330219 for KBX0400-0500, APX0400-0500, and AWH0400-0500 model ranges. Always verify the complete model and serial number before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes 100330219 replace Lochinvar GKT20003?\u003c\/strong\u003e\u003cbr\u003eYes. Current replacement references identify \u003cstrong\u003e100330219\u003c\/strong\u003e as the replacement for the discontinued \u003cstrong\u003eGKT20003 4\" flue collar gasket\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this gasket be selected only by the 4-inch flue size?\u003c\/strong\u003e\u003cbr\u003eNo. Flue diameter alone does not confirm compatibility. Match the OEM part number and verify the equipment model and serial number before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e100330219 is the cross for 100208104 \u003c\/span\u003e\u003c\/p\u003e","brand":"Lochinvar \u0026 A.O. Smith","offers":[{"title":"Default Title","offer_id":42294916677810,"sku":"100330219","price":42.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_94e84079-4bb5-4c0c-8c6c-299619553ad2.png?v=1789505894","url":"https:\/\/www.gsistore.com\/en-ca\/products\/lochinvar-a-o-smith-100330219-gasket-kit","provider":"GSIstore","version":"1.0","type":"link"}