Description
PR-2870 is a light weight, non-chromate corrosion inhibitive sealant. It has a service temperature range from -80°F (-62°C) to 250°F (121°C), with intermittent excursions up to 300°F (149°C). This material acts as an effective corrosion inhibitor when used with aluminum alloys or with dissimilar metals.
The cured sealant maintains elastomeric properties after limited exposure to both jet fuel and aviation gas.
Class ACollapse/Expand
PR-2870 Class A is a two-part, epoxy cured Permapol® P-3.1 polythioether compound. The uncured material is suitable for application by brush up to a thickness of 25 mils. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
Specifications
| MIL-PRF-81733 Type I-2, Class 2, Grade B, |
| PRC STANDARD |
| P7941MRJ TY 2 CL B GR A |
Technical Data Sheet for PR-2870 Class A (pdf)
Class BCollapse/Expand
PR-2870 Class B is a two-part, epoxy cured Permapol® P-3.1 polythioether compound. The uncured material is a low sag, thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
Standard application life 1/2 and 2 hours
Specifications
| MIL-PRF-81733 Type II-2, Class 2, Grade B | PRC STANDARD |
Technical Data Sheet for PR-2870 Class B (pdf)
Class CCollapse/Expand
PR-2870 Class C-12/24 & C-48 are two-part, epoxy cured Permapol® P-3.1 polythioether compound. The uncured material is a roller-grade liquid suitable for application by brush, extrusion gun or spatula. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
PR-2870 C-12/24 is unique in that while it possesses a long application and assembly time, it then exhibits rapid cure. This means that one product has the potential to be used in place of C-8, C-12, in addition to C-24, allowing for reduced inventory.
Specifications
| MIL-PRF-81733 Type II-2, Class 2, Grade B | MM1076 | PRC STANDARD |
Technical Data Sheet for PR-2870 Class C (pdf)
Standard PackagingCollapse/Expand
PR-2870 comes in the following packaged configuration:
- Semkit® package - a complete package assembly that stores, mixes, and applies sealant. Semkit® packages eliminates the labor intensive task of measuring and handling materials, and prevents contamination when opening and closing can kits.
- Model 693 Semkit® with 3.8 fl. oz. of sealant in a 6 oz. cartridge
- Premixed and Frozen (PMF) - Pre-measured mixed material and frozen at extreme low temperature (also shipped and stored frozen). PMF material is the most convenient package configuration for high usage applications, simply thaw and use.
- PMF 5-3/4 fl oz. of sealant in a 6 oz. cartridge
Specification information provided for reference purpose only. Review specification QPL for verification or consult with engineering services.f