{"product_id":"lochinvar-l100275575-heat-exchanger-gasket-top-plate","title":"Lochinvar L100275575 Heat Exchanger Gasket Top Plate","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe LOCHINVAR L100275575 is a heat exchanger gasket top plate designed for use in high-efficiency condensing boiler applications. This gasket seals the top plate section of the heat exchanger assembly, maintaining a reliable pressure boundary between combustion and water-side circuits. Proper sealing at this interface is critical for safe operation and thermal efficiency. Licensed HVAC and hydronic heating technicians typically source this part during scheduled maintenance or when an existing gasket shows signs of compression failure, cracking, or heat-induced degradation.\u003c\/p\u003e\u003cp\u003eThis part is referenced for the Lochinvar NKC 199 series condensing boiler. It is used in residential and light commercial hydronic heating systems where the NKC 199 unit is installed. Replacement of the heat exchanger top plate gasket is a standard service procedure during heat exchanger inspection or following a leak diagnosis at the top plate joint.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOEM replacement gasket for the heat exchanger top plate assembly\u003c\/li\u003e\n\u003cli\u003eDesigned to maintain a reliable seal at the top plate interface under condensing boiler operating conditions\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement minimizes installation time during service calls\u003c\/li\u003e\n\u003cli\u003eIntended for use on the NKC 199 series boiler platform\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with the Lochinvar NKC 199 condensing boiler as referenced in the product data.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC or hydronic heating technician. Before servicing, shut down the boiler, isolate the gas supply, and allow the heat exchanger to cool completely before disassembly. Drain or isolate the water-side circuit as required before removing the top plate. Follow all applicable local codes and the manufacturer service documentation when reassembling the heat exchanger top plate joint.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Heat Exchanger Top Plate Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries Compatibility\u003c\/strong\u003e: NKC 199\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LOCHINVAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: L100275575\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOCHINVAR","offers":[{"title":"Default Title","offer_id":51343382872370,"sku":"L100275575","price":67.33,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/100275575.jpg?v=1782021046","url":"https:\/\/voomisupply.com\/products\/lochinvar-l100275575-heat-exchanger-gasket-top-plate","provider":"Voomi Supply","version":"1.0","type":"link"}