PPG PR1428B-2 (100-ml-Semkit)

Additional Product Information

Overview

PPG PR1428B-2 is a two-part, low-adhesion polysulfide sealant used worldwide by MRO teams and aircraft engineers. It provides reliable sealing for fuel tank access doors on military and commercial aircraft while remaining removable for inspections and maintenance. Its resistance to aviation fuels and extreme conditions ensures safe, efficient aircraft servicing. PR1428B-2 supports fast repairs in both routine MRO and urgent AOG situations, helping keep aircraft mission-ready and protecting operational safety.

Key Technical Specs

• Type: Two-part, low-adhesion polysulfide sealant
• Primary Use: Sealing fuel tank access doors, forming form-in-place gaskets, and protecting electrical components from fuel, moisture, and dirt
• Service Temperature: -65°F to 250°F (-54°C to 121°C), intermittent excursions up to 275°F (135°C)
• Consistency: Thixotropic paste, low-sag; suitable for extrusion gun or spatula application
• Cure / Work Life: Approximately 2 hours at 25°C (77°F)
• Protection: Resistant to fuel, environmental exposure, and short circuits

Approvals & Specifications

• PPG OEM Part No.: PR1428B2-1001
• UN Number: UN3082
• Class: CL9, PGIII
• ECCN: EAR99
• Complies with aerospace standards for fuel tank access door sealing

Typical Aircraft MRO / AOG Applications

• Maintaining fuel tank access doors to prevent leaks and protect wiring and components
• Rapid on-wing repairs during AOG events to minimize downtime
• Supports aircraft safety, inspection integrity, and structural compliance

Compatibility & Safety Notes

• Safe for use on aircraft metals, composites, and primer coatings
• Easy application for MRO teams, ground crews, and rapid-response AOG repairs
• Shelf Life: 9 months (270 days) from manufacture when stored correctly

Packaging & Procurement

• Pack Size: 100-ml Semkit cartridge
• Colour: Black
• Origin: United Kingdom
• Optimized for single-job use to minimize waste

Why Chosen for AOG / MRO

• Low-adhesion, removable formulation allows repeated access for inspections
• Fuel-resistant and temperature-stable; reliable for engineers and ground crews
• Critical for fast-response situations to reduce aircraft downtime

Practical Suggestions for Your Team (AOG Mindset)

• Keep multiple Semkits on-hand for rapid response
• Pre-kit tools (extrusion guns, spatulas, mixing pads) for immediate deployment
• Verify substrate compatibility and cleanliness before application
• Prepare surfaces according to TDS instructions for optimal adhesion and removability
• Track shelf life and rotate batches to prevent expired or degraded sealant use
• Document batch numbers, application areas, and cure times for compliance and traceability
• Train AOG crew on proper two-part mixing and 2-hour working time at 25°C (77°F)
• Keep extra kits in AOG toolkits for multiple aircraft types and rapid deployment

Manufacturer / Aviation Spec Codes

• Referenced by OEMs including Boeing, Airbus, and Lockheed Martin for fuel tank and access door sealing; always verify per aircraft maintenance manual

Alternative Names & Descriptions

• PR-1428B-2 Access Door Sealant
• PR-1428B-2 Semkit
• Fuel Tank Access Door Sealant (PPG)
• Low-adhesion polysulfide sealant for aircraft maintenance
• PR1428B2SEMKIT:K6807
• PR1428B2-TU