Description
PR-1776-M is a low density, high temperature aircraft integral fuel tank sealant. It has a service temperature range from -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 360°F (182°C). This material is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications. It offers as much as a twenty percent weight savings, per unit volume, over traditional sealants used for these purposes. The cured sealant maintains excellent elastomeric properties after prolonged exposure to aircraft fuels both jet fuel and aviation gas, and will resist limited contact to diphosphate ester based hydraulic fluids.
Class BCollapse/Expand
PR-1776-M Class B is a two-part, manganese dioxide cured Permapol® P-5 modified polysulfide. 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.
Specifications
| AMS 3281 – Type 1 Class B2 | AMS 3281 – Type 1, Class B-1/2 | AMS 3281 – Type 1, Class B-2 |
| BAMS 552-002 – Class B-1/2 – BOMBARDIER | BAMS 552-002 – Class B-2 – BOMBARDIER | BMS 5-45 – Class B-1/2 – BOEING |
| BMS 5-45 – Class B-2 – BOEING | CMNP095 – CESSNA AIRCRAFT COMPANY | CMS-SL-104 – Type 1, Class B, Grade 1/2 – COMAC |
| CMS-SL-104 – Type 1, Class B, Grade 2 – COMAC | CPW 560 – PRATT & WHITNEY CANADA | DHMS-S3.01 – TYPE II CLASS B-1/2 – DE HAVILLAND INC |
| DHMS-S3.01 – TYPE II CLASS B-2 – DE HAVILLAND INC | DMS 2427 – Class B-2 – BOEING LONG BEACH | MM1080 – Class B-1/2, Type 1 – MITSUBISHI HEAVY INDUSTRIES |
| MM1080 – Class B-2, Type 1 – MITSUBISHI HEAVY INDUSTRIES | SMS116303 – Type 2 Class B2 – SPIRIT AEROSYSTEMS | SMS116303 – Type II, Class B-1/2 – SPIRIT AEROSYSTEMS |
| SMS116303 – Type II, Class B-2 – SPIRIT AEROSYSTEMS |
Technical Data Sheet for PR-1776-M Class B (pdf)
Class CCollapse/Expand
PR-1776 Class C is a two-part, manganese dioxide cured Permapol® P-5 modified polysulfide. 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.
Specifications
| AMS 3281 – Type 1, Class C-12 | AMS 3281 – Type 1, Class C-2 | AMS 3281 – Type 1, Class C-48 |
| AMS 3281 – Type 1, Class C-8 | DMS 2427 – Class C-2 – BOEING LONG BEACH |
Technical Data Sheet for PR-1776 Class C (pdf)
Standard PackagingCollapse/Expand
PR-1776 comes in the following packaged configuration:
- Two-Part Can Kit packaged with part A and part B pre-measured into separate containers.
- Pint Kit with 12 fl. oz. of sealant
- 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 654 Semkit® with 3-1/2 fl. oz. of sealant in a 6 oz. cartridge
- Model 655 Semkit® with 2 fl. oz. of sealant in a 2-1/2 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 2-1/4 fl. oz. of sealant in a 2-1/2 oz. cartridge
- Other packaging configurations may be available.
Specification information provided for reference purpose only. Review specification QPL for verification or consult with engineering services.
