Desothane® PR1826B1-4 Fuel Tank Sealant, 6 oz, Liquid (Part A), Solid (Part B)

PR-1826 Class B is a rapid cure, aircraft integral fuel tank sealant. 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 exposure to both jet fuel and aviation gas. PR-1826 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 when correctly primed with PR-1826AP adhesion promoter.

TECHNICAL INFORMATION
• AMS 3277 Type 1 Class B-1/4 Grade 1 Approved
• AMS 3277 - Type 1 Class B-2 Grade 1 Approved
• Lockheed FMS-3064 FORM I Class B-1/4 Approved
• Lockheed FMS-3055 Class B-2 Approved

SPECIFICATIONS
• Series: PR-1826
• Container Size: 6 oz
• Base Type: Petroleum
• 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), >=10 to <=25% Calcium Carbonate, >=10 to <=25% Aluminum Hydroxide, >=1 to <=5% Titanium Dioxide, >=1 to <=5% Butanone, <=1% 2, 2'-thiodiethanethiol (Part B)
• Application Time: 1/4 hr
• Curing Time: 1-1/2 hr
• Density: 11.35 lb/gal (Part A)
• Specific Gravity: 1.47
• Viscosity: >21 cSt
• Tack-Free Time: 1 hr
• VOC Content: 1 g/L
• Application Method: Extrusion Gun and Spatula
• Shelf Life: 274 Days
• Storage Temperature: 60 to 80 deg F
• Relative density: 1.36 lb/gal (Part A), 1.45 lb/gal (Part B)
• Flash Point: 150 deg F
• Boiling point: >100 deg F
• Temperature Rating: -80 to 320 deg F
• Suitable for Use With: Aircraft Integral Fuel Tank
• Domestic/Import: Domestic

APPLICATIONS
• Industrial use Only