DeSoto® Rapid Curing Fuel Tank Sealant Semikit, Liquid (Part A), Solid (Part B), 1/2 hr, 2.5 oz

PR-1828 Class B is a rapid curing aircraft integral fuel tank sealant. It has a service temperature range from -80 to 320 degrees F, with intermittent excursions up to 420 degrees 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 II Certified, Class Grade 1
Specifications
• Series: PR-1828 Class B
• Container Size: 2.5 oz
• Form: Liquid (Part A), Solid (Part B)
• Color: Purple/White (Part A/B)
• Composition: Bis-[4-(2,3-Epoxipropoxi)Phenyl]Propane =20 to =50, Phenol, Polymer with Formaldehyde, Glycidyl Ether =20 to =50%, Calcium Carbonate =20 to =31%, [3-(2,3-Epoxypropoxy)Propyl]Trimethoxysilane =1.0 to =4.5% (Part A), Calcium Carbonate =20 to =35%, Aluminum Hydroxide =10 to =20%, Titanium Dioxide =1.0 to =5%, Butanone =1.0 to =5%, 2,2'-Thiodiethanethiol <1% (Part B)
• Application Time: 1/2 hr
• Curing Time: 3 hr
• Density: 11.18 lb/gal (Part A), 11.85 lb/gal (Part B)
• Specific Gravity: 1.47
• Viscosity: >21 cSt (Part A)
• Tack-Free Time: <2 hr
• VOC Content: 42 g/L (Part A), 19 g/L (Part B)
• Application Method: Extrusion Gun, Spatula
• Shelf Life: 270 days
• Storage Temperature: 80 deg F
• Appearance: Paste
• Relative Density: 1.34 (Part A), 1.42 (Part B)
• Tensile Strength: 350 psi
• Flash Point: 65.56 deg C (Part B)
• Boiling Point: >37.78 deg C (Part A)
• Temperature Rating: -80 to 320 deg F
• Application Time: 1/2 hr
• Elongation: 350 %
• Hardness Rating: 47 Durometer A