{"product_id":"flamemaster-cs-5500n-b1-2-ams-3276-high-temperature-fuel-tank-sealant-pint","title":"Flamemaster CS-5500N B1\/2  - AMS-3276 - High Temperature Fuel Tank Sealant - Pint","description":"\u003ch3\u003eFlamemaster CS5500N Class B AMS-3276 - High Temperature Fuel Tank Sealant \u003c\/h3\u003e\n\u003cp\u003eCS 5500N Class B is a two-part, chemically curing polysulfide fuel tank sealant specifically formulated for higher temperature service in aircraft. It is designed to maintain its excellent sealing properties, flexibility, and fuel resistance even when exposed to elevated operational temperatures, which are common in modern high-performance aircraft or specific areas of the fuel system. The \"Class B\" designation indicates a trowelable consistency, allowing for convenient application by spatula or extrusion gun for filleting, sealing seams, fasteners, and small access panels. Upon curing, it forms a tough, resilient rubber that provides a durable, leak-proof barrier against a wide range of aviation fuels, lubricants, and hydraulic fluids across a broad temperature spectrum.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features for Aviation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-Part System: Comprises a base compound and an accelerator, mixed immediately prior to application.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePolysulfide Chemistry: Provides the fundamental excellent resistance to aviation fuels and other aircraft fluids.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigher Temperature Resistance: Engineered to perform reliably at elevated continuous operating temperatures (e.g., up to 250°F \/ 121°C, and intermittently higher), distinguishing it from standard fuel tank sealants.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eClass B Consistency: Trowelable, suitable for application with a spatula, spreader, or extrusion gun for forming fillets and sealing larger areas.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eExcellent Adhesion: Forms strong, long-lasting bonds to typical aircraft substrates like aluminum, titanium, stainless steel, and composite materials.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuperior Fuel and Fluid Resistance: Highly resistant to aviation jet fuels (JP-4, JP-5, JP-8, Jet A\/B), hydraulic fluids (e.g., Skydrol), and engine oils.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlexibility and Resilience: Cures to a flexible, rubbery seal that can withstand aircraft vibrations, thermal cycling, and structural movement without cracking or delaminating.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGood Work Life (Pot Life): Provides sufficient time for application before curing begins, depending on the specific \"B\" class variant (e.g., B-1\/2, B-2, B-4 indicating pot life in hours).\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCures at Room Temperature: Cures efficiently at ambient temperatures, though elevated temperatures can accelerate the cure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Aviation Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSealing Integral Fuel Tanks: Crucial for preventing fuel leaks in the main fuel containment structures within wings and fuselage.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-Temperature Fuel Tank Sections: Specifically applied in areas of the fuel tank near heat sources (e.g., engines, hot air ducts) or in high-performance aircraft where fuel temperatures can elevate.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFastener and Seam Sealing: Used to seal around rivets, bolts, and along structural seams within fuel tanks to ensure a hermetic seal.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAccess Panel Sealing: Applied to seal removable access panels on fuel tanks or other compartments exposed to high temperatures and aviation fluids.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFilleting and Void Filling: Employed to create smooth fillets around joints and fill small voids within fuel-wetted areas to improve flow and prevent fluid entrapment.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRepair of Fuel Tank Leaks: Used for both production and repair, offering a durable solution for leaks in demanding temperature environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ccenter\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0888\/2991\/9604\/files\/CS-5500N-Class-B-TDS-English.pdf?v=1750087907\" style=\"background-color: #000; border: none; border-radius: 4px; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; width: 80%;\" target=\"_blank\"\u003eDownload Technical Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/center\u003e","brand":"Flamemaster","offers":[{"title":"Default Title","offer_id":52333484343668,"sku":"CS5500NB1-2PT","price":75.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0888\/2991\/9604\/files\/CS5500NB1-2PT.png?v=1750254680","url":"https:\/\/145.aero\/products\/flamemaster-cs-5500n-b1-2-ams-3276-high-temperature-fuel-tank-sealant-pint","provider":"Aircraft Shop Supply","version":"1.0","type":"link"}