PPG PS890A-1/2 (1-S654)

Additional Product Information

Overview

PPG PS890A-1/2 is a trusted aircraft sealant used by MRO teams and aircraft engineers worldwide for sealing integral fuel tanks and fuselage components. Its proven fuel resistance, wide operating temperature range, and long-lasting elastomeric performance support mission-critical reliability across both military and commercial fleets. From urgent AOG events to scheduled maintenance, keeping PPG PS890A-1/2 in stock enables fast response, reduced downtime, and continued regulatory compliance.

Key Technical Specs

• Product Type: Aircraft maintenance sealant
• Common Use: Brush and fay sealing of integral fuel tanks and fuselage areas
• Service Temperature Range: -54°C to 121°C (-65°F to 250°F)
• Temperature Excursions: Up to 135°C (275°F)
• Performance: Cures to a durable elastomer with excellent resistance to jet fuel and aviation gasoline

Approvals & Specifications

• Manufacturer: PPG
• PPG Part Number: 1425CF/2CA654SK
• Hazard Classification: UN1133 and UN3082, Class 3 and 9, Packing Groups II and III
• ECCN: EAR99
• Country of Origin: USA
• Shelf Life: 9 months (270 days) from date of manufacture

Typical Aircraft MRO / AOG Applications

• Sealing integral fuel tanks to prevent leaks during operation
• Fuselage sealing in areas exposed to fuel and environmental stress
• AOG repairs requiring rapid return to service
• Routine MRO maintenance to maintain fuel system integrity

Compatibility & Safety Notes

• Highly resistant to jet fuel and aviation gasoline
• Maintains elastomeric properties for extended service life
• Brush and fay application supports precise sealing of complex structures
• Use appropriate PPE and follow SDS guidance during handling and application

Packaging & Procurement

• Supplied as Semkit 654 in a 1 US gallon (3.785 L) container
• Standard packaging for MRO and AOG operations
• Recommended to stock for immediate availability during urgent maintenance

Why Chosen for AOG / MRO

• Reliable sealing performance across a wide temperature range
• Excellent fuel resistance reduces risk of leaks and in-service failures
• Proven track record with airlines, MRO providers, and military operators

Practical Suggestions for Your Team (AOG Mindset)

• Verify expiry date prior to use
• Maintain at least one Semkit in stock for urgent fuel tank sealing
• Ensure application tools are readily available for fast turnaround

Manufacturer / Aviation Usage Notes

• Widely used across Boeing, Airbus, Lockheed Martin, and military platforms
• Commonly accepted as a Class A fuel tank sealant in aviation maintenance

Alternative Names & Descriptions

• PPG PS890A Class A Sealant
• PPG 1-S654 Fuel Tank Sealant
• ECL-G-101 Equivalent
• PS890A1/2-1001
• PROSEAL 890
• PS890A1/2 SK654
• PS890A1-2SK654