When you're 30,000 feet in the air, the last thing you want is your windshield sealant taking a day off. Fortunately for you, SkyGeek offers PPG Aerospace® PR-1425 B-1/2 Windshield and Canopy Sealant in convenient 6 oz. SemKits. PPG’s PR-1425 B-1/2 Windshield Sealant doesn’t just stick around — it holds the line with the type of reliability you’ve come to expect from a PPG® product.
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Specially formulated for aircraft transparencies, this black sealant delivers a dependable bond between your windshield or canopy and the body of the aircraft, so your cockpit stays clear, quiet and structurally sound. It’s tough against UV rays, stubborn against chemicals, and still somehow smooth to apply. The sealant is packaged in a SemKit for easy dispensing and precision application, so windshield installations and canopy repairs take less time, with less waste.
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The B-1/2 classification means this black sealant has a work life of about 30 minutes, giving you plenty of time to get the sealant just right before it begins to cure. The formula won’t haze or craze windshields, maintaining crystal clear vision while sealing edges against leaks. The 654-SemKit format keeps things tidy and ready for action with no mess and no fuss. Whether you're a maintenance tech, an A&P wizard or the go-to fixer on the hangar floor, this sealant is your best bet when it comes to sealing windows and looking good while doing it. Keep it sleek and sealed by ordering PPG Aerospace® PR-1425 B-1/2 Windshield and Canopy Sealant from SkyGeek. Need more than one SemKit? No problem — volume pricing kicks in when you order 24 or more units.
| Application Properties (typical) | | | Color | Part A - Black
Part B - Black
Mixed - Black | | Mixing ratio by weight | Part A: Part B
10:100 | | Base Viscosity | 16,000, (1600)
(Brookfield #6 @ 10rpm), Poise (Pa-s) | Application life and cure time
@ 77°F (25°C), 50% RH | | | Application life (hours) | Tack free time (hours) | Cure time to 35 A Durometer (hours) | | B-1/2 | 1/2 | <8 | 24 | | B-1 | 1 | <24 | 48 | | B-2 | 2 | <24 | 48 | | |
| Performance Properties (typical) | | | Cure Time | 7 days @ 77°F (25°C), 50% RH | | Cured specific gravity | 1.49 | | Nonvolatile content,(%) | 93% | | Ultimate cure hardness (Durometer A) | 55 | | Peel strength, pli (N/25 mm),100% cohesion | | Dry, 14 days @ 77°F (25°C) | | MIL-G-25667 (Glass) - 50 (222) | | MIL-P-8184 (Acrylic)* - 48 (214) | | MIL-P-83310 (Polycarbonate)* - 46 (205) | | MIL-S-5059 (Stainless steel)* - 46 (205) | | MIL-T-9046 (Titanium comp. C)* - 46 (205) | | QQ-A-250/12 (Aluminum) - 46 (205) | | *Primed with PR-142 Adhesion Promoter | | | Thermal rupture resistance | Retains pressure of 10 psi with only negligible deformation, both before and after immersion in JRF. | | Low temperature flexibility @ -65°F (-54°C) | No cracking, checking or loss of adhesion. | | Corrosion resistance | No corrosion, adhesion loss, softening, or blistering after 20-day immersion in 2-layer salt water/JRF @ 140°F (60°C). | | Resistance to fluids | Excellent resistance to water, alcohols, petroleum-base and synthetic lubricating oils, and petroleum-base hydraulic fluids. | | Flexibility | No cracks after bending 180 degrees over 0.125 inch (3.18 mm) mandrel. | | Repairability to itself | Excellent to both freshly cured as well as fuel aged and abraded fillets. | | Fungus resistance | Non-nutrient | |
Note: The application and performance property values above are typical for the material, but not intended for use in specifications or for acceptance inspection criteria because of variations in testing methods, conditions and configurations.
Surface preparationImmediately before applying sealant to primed substrates, the surfaces should be cleaned with solvents. Contaminants such as dirt, grease, and/or processing lubricants must be removed prior to sealant application.
A progressive cleaning procedure should be employed using the appropriate solvents and new lint free cloth (reclaimed solvents or tissue paper should not be used). Always pour solvent on the cloth to avoid contaminating the solvent supply. Wash one small area at a time.
It is important that the surface is dried with a second clean cloth prior to the solvent evaporating to prevent the redeposition of contaminants on the substrate. Substrate composition can vary greatly. This can affect sealant adhesion. It is recommended that adhesion characteristics to a specific substrate be determined prior to application on production parts or assemblies.
For a more thorough discussion of proper surface preparation, please consult the SAE Aerospace Information Report AIR 4069. This document is available through SAE, 400 Commonwealth Avenue, Warrendale, PA 15096-0001.
Mixing instructions
PR-1425 Class B is supplied in a two-part kit. Mix according to the ratios indicated in the application properties section. Mix Part A and Part B separately to uniformity, then thoroughly mix entire contents of both parts of the kit to-gether taking care to avoid leaving unmixed areas around the sides or bottom of the mixing container.
Storage life
The storage life of PR-1425 Class B is at least 9 months when stored at temperatures between 40°F (5°C) and 80°F (27°C) in original unopened containers.
Health precautions
This product is safe to use and apply when recommended precautions are followed. Before using this product, read and understand the Material Safety Data Sheet (MSDS), which provides information on health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS is available on request. Avoid overexposure. Obtain medical care in case of extreme overexposure.
For industrial use only. Keep away from children.
For emergency medical information call 1-800-228-5635.
Safety Data Sheet
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