PPG Aerospace® P/S 870 A-2 Gray MIL-PRF-81733D Type I-2, Class 1, GA Spec Corrosion Inhibitive Sealant - 6 oz 654-SemKit

The PPG Aerospace® P/S 870 A-2 is a two-part, manganese dioxide–cured polysulfide sealant, supplied in a 6 oz 654-SemKit, formulated to meet MIL-PRF-81733D Type I-2, Class 1, GA specification. Engineered for airframe sealing and corrosion protection, P/S 870 A-2 provides superior adhesion, flexibility, and long-term resistance to galvanic and environmental corrosion across a wide range of aerospace substrates.

The A-2 designation offers a longer work life compared to A-1/2, allowing more time for tooling and precise application, making it suitable for complex assemblies, OEM production, and MRO maintenance tasks. Once cured, this sealant forms a durable, resilient barrier that resists aviation fuels, oils, hydraulic fluids, and environmental exposure.

Key Technical Features:

1. Product: P/S 870 A-2 Corrosion Inhibitive Sealant
2. Manufacturer: PPG Aerospace® / PRC-DeSoto®
3. Packaging: 6 oz 654-SemKit (two-part system)
4. Color: Gray
5. Chemistry: Manganese dioxide–cured polysulfide
6. Specification: MIL-PRF-81733D Type I-2, Class 1, GA
7. Function: Airframe sealing and corrosion protection
8. Provides resistance to fuels, oils, hydraulic fluids, and environmental stress
9. Ensures durability, flexibility, and long-term adhesion
10. Suitable for OEM assembly and MRO aerospace applications.