PPG PR-1826 B-2 ALO is a rapid cure, low odour aerodynamic smoothing and quick repair sealant. It is designed for sealing aircraft structures, depression filling and smoothing, and preventing faying surface corrosion from chemical cleaners and fuel spillage. It is a two-part, epoxy cured Permapol P-3 polythioether polymer, a thixotropic paste applied by extrusion gun or spatula. It must be primed with PR-1826 Adhesion Promoter, which is included in the kit.
Application Properties (B-2)
- Colour: A white, B aluminium grey, mixed aluminium grey; mix ratio by weight 8.5:100
- Base viscosity 13,000 P (1300 Pa·s); slump 8 mm
- At 23 °C application life 2 hours; tack free 16 hours; 30 Shore A in 36 hours
Performance
- Specific gravity 1.47; non-volatile content 95%; hardness 50 Shore A
- Peel (MIL-C-5541 aluminium, AMS-C-27725 polyurethane) 7 N/mm, 100% cohesive
- Tensile strength 3.5 MPa (500 psi); elongation 300%
- No cracking or loss of adhesion at −65 °C
Storage
- 6 months at 5–25 °C in unopened containers; Semkit package
| Packing | 6 OZ |