PPG Aerospace/PRC DeSoto® Class B Rapid Curing Fuel Tank Sealant 2.5 oz PR1826B1-4-2-5

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.

TECHNICAL INFORMATION
• AMS 3277 - Type 1 Class B-1/2, -1/4, -2 Grade 1, FMS-3055 - Class B-1/2, -2 LOCKHEED MARTIN, MS-3064 - FORM I Class B-1/2, -1/4, -2 LOCKHEED - FORT WORTH

SPECIFICATIONS
• Series: PR-1826
• Container Size: 2.5 oz
• Form: Liquid (Part A), Solid (Part B)
• Color: Black/White (Part A/B)
• Composition: >=20 to <=50% Bis-[4-(2, 3-Epoxipropoxi)Phenyl]Propane, >=20 to <=50% Phenol, Polymer with Formaldehyde, Glycidyl Ether (MW<=700), >=20 to <=31% Calcium Carbonate, >=5 to <=10% Carbon Black, >=1 to <3% [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% 2, 2'-Thiodiethanethiol (Part B)
• Curing Time: 7 Days
• Specific Gravity: 1.36 (Part A), 1.45 (Part B)
• Viscosity: >21 cSt (Part A)
• VOC Content: 1 g/L (Part A), 33 g/L (Part B)
• Shelf Life: 9 Months
• Tensile Strength: 350 psi
• Flash Point: 65.56 deg C (Part B)
• Boiling point: >37.78 deg C (Part A)
• Mixing Ratio: 8.5:100
• Application Time: 1/4 hr
• Domestic/Import: Domestic

APPLICATIONS
• Industrial use Only