PPG PR1440A-2 (150-ml-Semkit)

Additional Product Information

Overview

PPG PR1440A-2 is a two-part polysulfide sealant trusted by MRO and aviation engineers for sealing integral fuel tanks, fuselage joints, and critical structural components on both military and commercial aircraft. Its non-sag, brushable formula resists aviation fuels, hydraulic fluids, and extreme temperatures, making it essential for AOG situations where rapid repair is critical. Airlines and ground crews keep it in stock to maintain fleet safety, operational readiness, and protect passengers, crew, and multi-million-dollar aircraft investments.

Key Technical Specs

• Type: Two-part polysulfide sealant, manganese dioxide-cured
• Volume: 150 ml (0.15 L / 5.07 fl. oz.) Semkit cartridge
• Temperature Range: -54°C to 121°C (-65°F to 250°F), with short excursions up to 135°C (275°F)
• Application Life: 2 hours at 25°C (77°F)
• Cure Time: Tack-free in ~36 hours; full hardness (~35A durometer) in ~72 hours
• Adhesion: Excellent to aluminium, titanium, stainless steel, and composites
• Chemical Resistance: Aviation fuels (Jet A, Jet A-1, Avgas), hydraulic fluids, oils, and water
• Function: Durable, flexible sealing for integral fuel tanks, fuselage joints, fillets, and structural seams

Approvals & Specifications

• MIL-S-8802F: Type II, Class A-2
• Boeing: BMS 5-26U, Type 2, Class A-2
• Airbus: AIMS 09-00-002
• Sikorsky: SS 8664
• Bell Helicopter: 299-947-107
• Hughes Helicopters: 6500126, Type 2
• Aerojet: SPC-34162, Class 2-1/2
• US Army Missile Command: MIS 30391, Type 1, Class 2

Typical Aircraft MRO / AOG Applications

• Sealing integral fuel tanks during maintenance or modifications
• Repairing fuselage joints, fillets, and structural seams
• Emergency AOG repairs to minimize aircraft downtime
• Routine MRO operations to maintain structural integrity
• Keeping stock ensures rapid response, maintaining fleet safety and operational readiness

Compatibility & Safety Notes

• Compatible with aluminium, titanium, stainless steel, and composites
• Non-sag, brushable formula ideal for vertical and overhead applications
• PPE recommended: gloves, eye protection, and adequate ventilation
• Follow SDS for handling, storage, and safety precautions

Packaging & Procurement

• Supplied in 150 ml Semkit cartridge for accurate, easy mixing
• Shelf life: ~9 months when stored cool and dry
• Single kit contains both Part A and Part B for immediate use
• Matches the Aerospheres product page offerings

Why Chosen for AOG / MRO

• Fast, reliable cure in critical maintenance and emergency scenarios
• Durable, flexible seal ensures long-term fuel and structural integrity
• Trusted by aviation engineers and ground crews for military and commercial aircraft
• Reduces aircraft out-of-service time, protecting passenger and crew safety

Practical Suggestions for Your Team (AOG Mindset)

• Maintain adequate stock for rapid response
• Train ground crew and MRO personnel on proper mixing and application
• Monitor shelf life and storage conditions
• Keep batch numbers and usage records for traceability and compliance

Manufacturer / Aviation Spec Codes

• Manufacturer: PPG Aerospace
• Applicable Specs: MIL-S-8802F, BMS 5-26U, AIMS 09-00-002, SS 8664, 299-947-107, 6500126, SPC-34162, MIS 30391

Alternative Names & Descriptions

• PR1440A Semkit
• PPG PR1440A Fuel Tank Sealant
• PPG Polysulfide Sealant
• Two-part polysulfide, brushable, non-sag, corrosion-inhibiting aerospace sealant
• PR1440A-2
• PR1422A2-654SEMKIT
• PR1440A2
• PR1440A2SK654:83574
• PR1440A2SK654C:83574
• PR1422A-2-6OZ