PR-1828 Class B is an aircraft integral fuel tank sealant. It is a two-part, epoxy cured PERMAPOL® P-3 polythioether compound designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications.
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WARNING: This product can expose you to chemicals including METHANOL and TITANIUM DIOXIDE (AIRBORNE, UNBOUND PARTICLES OF RESPIRABLE SIZE) which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Overview
The cured sealant maintains excellent elastomeric properties after prolonged exposure to both jet fuel and aviation gas. The mixed, uncured material is a low sag, thixotropic paste suitable for application via extrusion gun or spatula. Unlike standard polysulfide fuel tank sealants, PR-1828 Class B can cure at temperatures as low as 5°C (41°F) and is unaffected by changes in relative humidity. This sealant has excellent adhesion to common aircraft substrates. The B-1/2 classification indicates an application life of 1/2 hours. It has a service temperature range from -60°C (-76°F) to 150°C (302°F) with intermittent excursions of up to 215°C (419°F). The storage life of PR-1828 Class B is 9 months when stored in original, unopened containers at temperatures between 4-27°C (39-81°F).
Features & Benefits
Low-temperature flexibility at -65°C (-85°F) with no cracking, checking, or loss of adhesion
Excellent repairability to both freshly cured sealant and fuel-aged abraded fillets
Fungal resistance and non-nutrient properties
Specifications
Color: Part A - Purple, Part B - White, Mixed - Beige
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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.
