PPG PS890B-1/2 (100-ml-Semkit)

Additional Product Information

Overview

PPG PS890B-1/2 is a high-performance aerospace fuel tank sealant trusted by MRO teams and aircraft engineers worldwide. It provides reliable, fuel-resistant sealing essential to the safety and airworthiness of both military aircraft and commercial fleets. Proven in sealing integral fuel tanks and critical fuselage joints, it supports reduced downtime during scheduled maintenance and urgent AOG situations. Supplied in a ready-to-use Semkit, PS890B-1/2 ensures consistent mixing, easy application, and reduced material waste, making it a practical industry benchmark for polysulfide sealants.

Key Technical Specs

• Type / Chemistry: Two-part, manganese-dioxide cured polysulfide fuel tank sealant
• Packaging: 100 ml (3.38 fl oz) Semkit cartridge for precision repairs and AOG response
• Service Temperature Range: -54°C to +121°C (-65°F to +250°F)
• Temperature Excursions: Up to approximately 135°C (275°F)
• Physical Properties: Elastomeric after cure, maintains flexibility and adhesion after prolonged fuel exposure
• Mix Ratio: Pre-measured Part A and Part B in Semkit; follow manufacturer instructions exactly
• Load-Bearing: Not structural; intended for sealing and fuel containment only
• Shelf Life: Approximately 9 months (270 days) when stored per manufacturer guidelines
• Hazard / Shipping: Commonly shipped under UN3082, Hazard Class 9, Packing Group III

Approvals & Specifications

• Manufacturer: PPG Aerospace
• Product Family: P/S 890 Class B (PS890B)
• Associated Industry Specification: AMS-S-8802 (refer to TDS for Type/Class applicability)
• OEM Acceptance: Widely used across OEM maintenance programs; Certificates of Conformance recommended for platform-specific compliance
• Documentation: PPG Technical Data Sheet (TDS) and Safety Data Sheets (SDS) available from manufacturer

Typical Aircraft MRO / AOG Applications

• Sealing integral fuel tanks, access doors, and fuselage joints exposed to fuel or condensate
• Immediate AOG repairs where small, fast-application kits are required
• Preventing aircraft groundings due to fuel seal leaks
• Supporting interim repairs prior to scheduled depot maintenance

Compatibility & Safety Notes

• Compatible with aircraft metals and common composite substrates when surface preparation follows TDS guidance
• Generally compatible with elastomeric seals; confirm for specific compounds
• Semkit packaging ensures accurate mixing when used with proper applicator tools
• Ambient cure rate varies with temperature and humidity; cold conditions may extend cure time
• Use appropriate PPE and adequate ventilation; follow SDS for handling, storage, and disposal
• Intended for fuel system applications; verify suitability before use in non-fuel interior areas

Packaging & Procurement

• Supplied as individual 100 ml (3.38 fl oz) Semkit cartridges with lot identification
• Recommended order details include part number, batch/lot, manufacture date, remaining shelf life, TDS, SDS, and Certificate of Conformance
• FIFO stock rotation and temperature-controlled storage recommended

Why Chosen for AOG / MRO

• Rapid field deployment using Semkit packaging
• Proven resistance to jet fuel and aviation gasoline
• Cost-effective for small repairs compared to bulk sealant kits
• Long-standing industry familiarity among maintenance technicians

Practical Suggestions for Your Team (AOG Mindset)

• Stock multiple 100 ml Semkits in AOG response kits
• Ensure technicians are trained in Semkit application and surface preparation
• Carry solvent wipes, applicator guns, and tooling equipment
• Plan for extended cure times in cold environments
• Record batch and application data for traceability and compliance

Manufacture / Aviation Spec Codes

• PPG / PRC Family Designation: P/S 890 Class B
• Associated Specification Reference: AMS-S-8802
• OEM Acceptance: Platform-specific approval via maintenance documentation or supplier certification

Alternative Names & Descriptions

• PPG PS890B-1/2 Semkit
• PS 890 B-1/2 Fuel Tank Sealant
• Pro-Seal 890 B Semkit
• PS890 Semkit 100 ml
• Rapid Cure Polysulfide Fuel Tank Sealant
• PROSEAL 890
• PS890B-1/2 SK654
• PS-890/B