PPG PR1440B-1/2 (150-ml-Semkit)

Additional Product Information

Overview

PPG PR1440B-1/2 is a two-part polysulfide sealant relied on by MRO and aircraft engineers for sealing integral fuel tanks, fuselage joints, and fillets. It provides durable, fuel-resistant performance, ensuring safe and efficient aircraft operation across military and commercial platforms. Its 150 ml (0.15 L / 5.07 fl. oz.) Semkit allows rapid, accurate mixing and application, making it ideal for AOG situations where downtime must be minimized. MRO operations worldwide keep it in stock for mission-critical sealing and maintenance tasks.

Key Technical Specs

• Type: Two-part, manganese dioxide-cured polysulfide sealant
• Packaging: 150 ml (0.15 L / 5.07 fl. oz.) Semkit
• Consistency: Non-sag, thixotropic paste suitable for vertical and overhead surfaces
• Service Temperature Range: -65°F to 250°F (-54°C to 121°C), intermittent up to 275°F (135°C)
• Chemical Resistance: Excellent against Jet A, Jet A-1, Avgas, hydraulic fluids, and petroleum-based oils
• Shelf Life: ~9 months (270 days) in cool, dry storage
• Common Uses: Sealing integral fuel tanks, fuselage joints, fillets, and structural seams in both military and commercial aircraft maintenance

Approvals & Specifications

• MIL-S-8802F: Type II, Class B-2
• Boeing: BMS 5-26U, Type 2, Class B-2
• Sikorsky Aircraft: SS 8664
• Bell Helicopter: 299-947-107
• Hughes Helicopters: 6500126, Type 2
• Aerojet: SPC-34162, Class 2-1/2
• U.S. Army Missile Command: MIS 30391, Type 1, Class 2
• Texas Instruments: 412115-12
• PPG Aerospace Spec: PPG-AFS 1910

Typical Aircraft MRO / AOG Applications

• Fuel tank sealing for commercial and military aircraft
• Sealing fuselage joints and fillets to prevent leaks and maintain structural integrity
• Emergency AOG repairs requiring rapid deployment
• MRO stock ensures urgent fuel system or fuselage repairs can be performed immediately, minimizing downtime

Compatibility & Safety Notes

• Compatible with aluminium, composites, and painted surfaces
• Resistant to aviation fuels, hydraulic fluids, and oils
• Non-sag formula suitable for vertical and overhead applications
• PPE recommended during application

Packaging & Procurement

• Supplied as 150 ml (0.15 L / 5.07 fl. oz.) Semkit cartridge
• Typically available in boxes of 24 Semkits
• Store in a cool, dry environment; avoid direct sunlight

Why Chosen for AOG / MRO

• Rapid application via Semkit system simplifies mixing for ground crews
• Durable and reliable chemical resistance and elasticity under extended fuel/oil exposure
• Versatile for multiple aircraft platforms and OEM-specified applications
• Reduces downtime, enabling quick return-to-service in AOG scenarios

Practical Suggestions for Your Team (AOG Mindset)

• Keep Semkits in dedicated AOG kits for quick access
• Train ground crews on proper application for consistent sealing performance
• Regularly inspect stock for expiration dates
• Pre-clean surfaces to maximize adhesion
• Apply first to critical fuel tank or fuselage joints, then to fillets or less critical areas

Manufacturer / Aviation Spec Codes

• Manufacturer: PPG Aerospace
• OEM / Aviation Codes:
  • Boeing: BMS 5-26U, Type 2, Class B-2
  • Sikorsky Aircraft: SS 8664
  • Bell Helicopter: 299-947-107
  • Hughes Helicopters: 6500126, Type 2
  • Aerojet: SPC-34162, Class 2-1/2
  • U.S. Army Missile Command: MIS 30391, Type 1, Class 2
  • Texas Instruments: 412115-12

Alternative Names & Descriptions

• PR1440B-1/2 Semkit
• PPG PR1440B Fuel Tank Sealant
• PPG PR1440B Polysulfide Sealant
• Aircraft Integral Fuel Tank Sealant
• Two-Part Aviation Sealant for AOG/MRO Applications
• PR1440B1-2-SEMKIT
• PR1440B1/2-100ML
• PR1440B1/2 150 ml
• PR1422B1/2
• PR1440B1/2
• PR-1440 B-1/2