Flamemaster CS3206 B1-6 Black Quick Repair Fuel Resistant Sealant

CS 3206 Class B is a two-part, manganese dioxide cured polysulfide fuel tank sealant specifically engineered for rapid repair and sealing applications in aircraft. It is designed to provide excellent adhesion and high fuel resistance with a fast cure time, making it ideal for situations where quick turnaround is essential. This Class B variant indicates a trowelable consistency that allows for easy application by spatula or extrusion gun, perfect for sealing seams, fasteners, and small access panels. Upon curing at room temperature, it forms a tough, flexible, and resilient rubber that maintains its integrity under exposure to jet fuels, aviation oils, and varying temperatures.

Key Features for Aviation:

• Two-Part System: Consists of a base compound and an accelerator, mixed just prior to application.
  
• Polysulfide Chemistry: Provides excellent resistance to a wide range of aviation fuels, hydraulic fluids, and lubricants.
  
• Manganese Dioxide Cure: A common curing agent for polysulfide sealants, contributing to robust properties.
  
• Class B Consistency: Trowelable, allowing for easy application with spatulas, spreaders, or extrusion guns for filleting and sealing.
  
• Quick Repair/Fast Cure: Specifically formulated for accelerated curing, significantly reducing downtime for repairs.
  
• Excellent Adhesion: Forms strong, durable bonds to common aircraft substrates, including aluminum, titanium, steel, and many composites.
  
• Fuel and Fluid Resistance: Highly resistant to aviation jet fuels (e.g., Jet A, Jet B, JP-4, JP-5, JP-8), hydraulic fluids (e.g., Skydrol), and engine oils.
  
• Wide Service Temperature Range: Maintains flexibility and sealing properties across the typical operating temperatures of aircraft, from very cold to high heat.
  Flexibility and Resilience: Cures to a flexible rubber that can withstand movement, vibration, and thermal cycling without cracking or delamination.

Typical Aviation Applications:

• Fuel Tank Repairs: Used for rapidly sealing leaks in integral fuel tanks, access panels, and fuel cell cavities, often addressing minor damages or temporary fixes.
  
• Fastener Sealing: Applied around rivets, bolts, and other fasteners within fuel-wetted areas to prevent leaks.
  
• Sealing Small Access Panels: Ideal for sealing small panels or covers on fuel tanks or other fluid compartments that require quick resealing after maintenance.
  
• Filleting and Void Filling: Used for creating smooth fillets around joints and filling small voids in fuel-wetted areas to improve flow and prevent fluid accumulation.
  
• Component Assembly: For sealing components that come into contact with fuel or other aviation fluids during assembly.
  
• Emergency Repairs: Its quick-cure nature makes it suitable for urgent leak repairs to get an aircraft back into service faster.

• All in-stock orders are processed within 1–2 business days (excluding weekends and holidays) after receiving your order confirmation email.
• Orders with a lead time will ship according to the estimated shipping time shown on the product page.
• If we experience a high volume of orders or if an item is backordered, processing times may be slightly delayed. We will notify you promptly via email.

• Returns must be made within a maximum of 3 business days after receiving the product, with prior authorization from Aircraft Shop Supply (Return Material Authorization). Returns without prior notice or written authorization will not be accepted.
• For products with 3 to 6 months of remaining shelf life, claims must be made within the next 2 business days after receipt.
• Returns are not accepted for products with less than 3 months of remaining shelf life.
• Returns are not accepted for products purchased during a low Shelf Life promotion, items sold with discounts, or special orders that must be placed directly with the factory.
• The customer is responsible for the return shipping cost, except in cases where the return is due to an error on the part of Aircraft Shop Supply.
• Refunds will only be issued after the product has been inspected and no damage is found.
• A 25% Restocking Fee will be charged for returns of products in good condition that are either no longer needed or were ordered incorrectly.
• A 35% Restocking Fee will be charged for returns of products with one year or less of remaining shelf life.
• No Restocking Fee will be charged if Aircraft Shop Supply is responsible for incorrectly shipping a product, or if the order is damaged upon leaving the warehouse.
• Hazardous Materials & Dangerous Goods: These items are sold as final and are not eligible for return approval.