PR-1425 Class B is a two-part polysulfide sealant for aircraft windshields and canopies, formulated to prevent crazing on acrylic and polycarbonate. It provides a weather-resistant seal from -65°F to 250°F with a 2-hour application life.
Buy now from
Boeing Distribution (formerly Aviall)
This product has been replaced by new Part # PR1425B2-2-50Z=5N
PR-1425 B-2 is a dichromate-cured polysulfide compound in a 2.5 oz 655-SemKit. The low-sag, thixotropic paste is applied by extrusion gun or spatula. When primed with PR-1861, it adheres well to glass, polycarbonate, acrylic, and metals, offering excellent UV and weather resistance.
Features & Benefits
Formulated to prevent crazing on acrylic and polycarbonate substrates
Durable, weather-resistant seal for windshields and canopies
Excellent adhesion to common aircraft substrates
Low-sag paste ideal for vertical or overhead application
Maintains flexibility and integrity across wide temperature range
High resistance to UV and weather exposure for longevity
2-hour application time allows precise positioning during installation
Specifications
Series: PR-1425 Class B
Manufacturer: PRC-DeSoto (PPG Aerospace)
Container Size: 2.5 oz (655-SemKit)
Color: Black (Parts A/B)
Form: Liquid (Part A), Solid (Part B), mixed as paste
Mixing Ratio: 10:100 by weight
Application Time: 2 hr (Class B-2)
Curing Time (Full): 7 days
Service Temperature Range: -65°F to 250°F (-54°C to 121°C)
Specific Gravity (Part A): 1.35
Shelf Life: 9 months
Technical Information
FMS-3065 Class B-1/2, -2 (Lockheed - Fort Worth)
GAC146BH Class B-1/2, -2 (Gulfstream)
MEP 09-037 Class B-1/2, -2 (Embraer)
MFM0027 Type B-1/2, -2 (Mitsubishi Heavy Industries)
Technical Information
FAA Approval Code
MRO
Country of Origin
United States
Harmonized Tariff Schedule Code
3214100020
Lead Time (Days)
19
Shelf Life
Yes
Total Shelf Life (Days)
274
Forecasted
No
Shipping Details
Hazmat Code
GPP
ECCN
EAR99
Schedule B
3214100020
8130-3 Eligible
No
Hazmat
Yes
Part Explosive
No
Item Replacement History
PR1425B2-2-50Z=5NPPG PR-1425 Class B-2 Windshield and Canopy Sealant, 2.5 oz
Buy now from
Boeing Distribution (formerly Aviall)
This product has been replaced by new Part # PR1425B2-2-50Z=5N
Product information provided "as is", and Boeing may add, change, discontinue or remove product information at any time. Product photos may not be exact match to product delivered. Seeterms & conditions.
