PPG PR1772B-2 (100-ml-Semkit)

Additional Product Information

Overview

Aircraft engineers and MRO teams rely on PPG PR1772B-2 for OEM-approved sealing with up to 30° weight savings. This Class B-2 polysulfide sealant is trusted for fuselage structures, joints, and fuel tanks, where corrosion protection and fuel resistance are critical. Ground crews keep it in stock because, in AOG situations, having PPG PR1772B-2 ready enables rapid sealing and return-to-service. It is the proven choice for MRO operations worldwide when safety and compliance cannot be compromised.

Key Technical Specs

• Type: Two-part, chemically curing polysulfide sealant; non-chromate corrosion-inhibitive exterior gap filler
• Work life / Class: Class B-2 (thixotropic, low-sag paste for vertical/overhead application)
• Temperature Range: -65°F (-54°C) to 250°F (121°C), intermittent up to 275°F (135°C)
• Fuel Resistance: Retains flexibility and adhesion after exposure to jet fuel and avgas
• Form Factor: 100-ml Semkit (~3.4 fl. oz.) for extrusion gun or spatula application
• Not Load-Bearing: Used for sealing and corrosion protection, not structural load transfer

Approvals & Specifications

• Boeing: Tested to BMS 5-142 Class B standards
• AMS: Meets AMS-S-8802 Class B
• UN/ECCN: UN3082; Class 9; PGIII; ECCN EAR99; Commodity Code 32141010

Typical Aircraft MRO / AOG Applications

• Fuel Tanks: Integral fuel tank sealing where fuel resistance and reduced weight are mission-critical
• Fuselage / Joints: Sealing fasteners, seams, and exterior gaps for corrosion protection
• AOG Readiness: Pre-measured Semkit enables rapid mixing and application, minimizing downtime

Compatibility & Safety Notes

• Substrates: Excellent adhesion to common aircraft materials; low-sag paste suitable for vertical/overhead use
• Safety Classification: Class 9, PGIII; handle per SDS; store cool and ventilated; follow hazmat shipping requirements
• Curing: Room-temperature cure supports hangar workflows without special ovens, ideal for MRO/AOG environments

Packaging & Procurement

• Packaging: 100-ml Semkit cartridge (~3.4 fl. oz.)
• Shelf Life: 9 months (270 days)
• Country of Origin: United Kingdom

Why Chosen for AOG / MRO

• Speed and Consistency: Semkit packaging reduces mixing errors and setup time
• Compliance: Meets Boeing and AMS standards, simplifying approvals across fleets
• Performance: Fuel resistance, wide temperature range, and corrosion inhibition deliver durable seals in demanding conditions

Practical Suggestions for Your Team (AOG Mindset)

• Stock Strategy: Hold multiple Semkits per line station; rotate stock by expiry (270 days)
• Tooling: Keep extrusion guns and spatulas ready; standardize Class B-2 workflows for vertical/overhead sealing
• QA / Compliance: Record batch/lot numbers in work orders; verify BMS/AMS applicability per aircraft program; ensure SDS/TDS access for technicians

Manufacturer / Aviation Spec Codes

• Manufacturer: PPG Aerospace
• Boeing: BMS 5-142 Class B
• AMS: AMS-S-8802 Class B
• Regulatory / Logistics: UN3082; Class 9; PGIII; ECCN EAR99; Commodity Code 32141010

Alternative Names & Descriptions

• PR1772B-2
• PPG PR-1772 Class B-2 Sealant
• Lightweight corrosion-inhibitive fuselage/fuel tank sealant
• Semkit aircraft sealant cartridge (100 ml)
• Boeing BMS 5-142 Class B sealant
• AMS-S-8802 Class B polysulfide sealant
• pr1772b2 semkit
• PR1772B2-6OZ
• PR1772 B2 SK654