This rapid curing sealant is designed for aircraft fuel tanks, offering a wide service temperature range and excellent adhesion to various substrates. It is a two-part, thixotropic paste that cures effectively at low temperatures and is resistant to jet fuel and aviation gas, making it suitable for critical 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
PR-1828 Class B is a rapid curing aircraft integral fuel tank sealant. It has a service temperature range from -80 to 320 deg F, with intermittent excursions up to 420 deg F. This material is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications. The cured sealant maintains excellent elastomeric properties after prolonged to both jet fuel and aviation gas. PR-1828 Class B is a two-part, epoxy cured Permapol® P-3 polythioether compound. The uncured material is a low sag, thixotropic paste, suitable for application by extrusion gun or spatula. Unlike standard polysulfide fuel tank sealants, it can cure at low-temperatures and is unaffected by changes in relative humidity. This sealant has excellent adhesion to common aircraft substrates.
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
Container Size: 2.5 oz
Form: Liquid (Part A), Solid (Part B)
Color: Purple/White (Part A/B)
Composition: >=20 to <=50% Bis-[4-(2, 3-Epoxipropoxi)Phenyl]Propane, >=20 to <=50% Phenol, Polymer with Formaldehyde, Glycidyl Ether, >=20 to <=31% Calcium Carbonate, >=1 to <=4.5% [3-(2, 3-Epoxypropoxy)Propyl]Trimethoxysilane (Part A), >=20 to <=35% Calcium Carbonate, >=10 to <=20% Aluminum Hydroxide, >=1 to <=5% Titanium Dioxide, >=1 to <=5% Butanone, <1.0 2, 2'-Thiodiethanethiol (Part B)
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DISCLAIMER: Product information provided “as is.” Boeing may add, change, discontinue or remove this information at any time. Product photos may not be exact match to product delivered. Seeterms & conditions.
