PPG Aerospace PR-1440A1/2 AMS-S-8802 / MIL-S-8802 Type 2 Class A1/2 Fuel Tank Sealant

The PPG PR-1440 A-1/2 is an essential two-part, manganese dioxide-cured polysulfide sealant specifically engineered for demanding aerospace maintenance and repair operations (MRO). As a Type 2, Class A compound, it provides the requisite fluid-resistance and physical properties mandated by key military and commercial aerospace specifications. This material is formulated as a low-viscosity liquid (Class A), prioritizing high penetration and coverage over volume filling. Its Type 2 manganese dioxide cure system ensures a resilient, fuel-tight seal across a wide operational temperature range.

Aviation ApplicationThe PR-1440 Class A is the industry standard for specific high-integrity fuel tank sealing tasks:

• Fastener/Rivet Overcoating: Its low viscosity is ideal for brush-coating installed rivets and fasteners, ensuring full encapsulation to prevent micro-leaks and inhibit the onset of crevice corrosion at structural joints.
  
• Seam and Joint Application (Thin Film): Used to apply a thin film (up to $25 \text{ mils}$ thick) to seams or complex internal structures where fillet sealing is impractical.
  
• Corrosion Prevention: The manganese dioxide cure system offers inherent corrosion-inhibiting properties crucial for protecting metal surfaces in continuous contact with fuel.The ability to select from multiple work-life times (A-1/2, A-1, A-2) allows MRO professionals to optimize the sealing process for small, rapid spot repairs (A-1/2) or larger-scale tank maintenance (A-2).

TECHNICAL INFORMATION
• AMS-S-8802 Type 2 Class A-2 Specified
• Cessna CMNP021 Type I, Class A-2 Specified

Interchangeable with Flamemaster: CS-3204A1/2

• 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.