PPG PR2001B2-A1002 (130-ml-Semkit)

Additional Product Information

Overview

PR-2001 Class B is a rapid-curing, low-odor aerospace sealant designed for aircraft integral fuel tanks, fuselage sealing, and aerodynamic smoothing. It delivers reliable performance in both extreme cold and high-temperature environments, and maintains its elastomeric properties even after prolonged exposure to jet fuel and aviation gasoline. Aviation maintenance and MRO teams rely on it for fast, precise sealing and consistent adhesion across a variety of substrates.

Key Technical Specs for PR-2001 Class B

• Type: Two-part epoxy-cured PERMAPOL P-3.1 polythioether
• Size/Volume: SEMKIT two-part package; pre-mixed frozen cartridge
• Color: Part A Black, Part B White, Mixed Light Gray
• Viscosity/Consistency: Low-sag, thixotropic paste; Brookfield #7 @ 2 rpm, 13,700 Poise (1,370 Pa s)
• Cure/Working Time: B- hr, tack-free <2 hr; B-2 2 hr, tack-free <8 hr; B-4 4 hr, tack-free <24 hr
• Tensile/Peel Strength: Tensile 407 434 psi (2,804 2,990 kPa); Peel strength 32 45 pli (142 200 N/25 mm)
• Shore Hardness: Durometer A 48
• Service Temperature: -80 F to 320 F (-62 C to 160 C), intermittent up to 420 F (216 C)
• Typical Uses: Fuel tank fillet sealing, fuselage sealing, aerodynamic smoothing, repairs over polysulfide sealants

Approvals & Specifications

• AMS 3277 Type II, Class B
• AMS 2629 Type I Fuel immersion
• AMS 2471 Anodized aluminum
• AMS 4901 Titanium
• AMS 5516 Stainless steel
• MIL-C-5541 Alodine aluminum
• MIL-C-27725 IFT coating
• MIL-PRF-85582 Epoxy coating
• MIL-PRF-85285 Urethane coating
• MIL-PRF-23377

Typical Aircraft MRO / AOG Applications

• Sealing aircraft integral fuel tanks
• Fuselage fillet and panel sealing
• Aerodynamic surface smoothing
• Repair over existing polysulfide sealants
• Emergency AOG fuel leak repairs

Compatibility & Safety Notes

• Excellent adhesion to anodized aluminum, titanium, stainless steel, and primed surfaces
• Use PR-187 adhesion promoter for repair over polysulfide sealants
• Wear appropriate PPE including gloves and safety glasses
• Follow Safety Data Sheet (SDS) guidelines for handling, exposure, and first aid
• Surface must be cleaned and dried before sealant application; avoid contaminants and reclaimed solvents

Packaging & Procurement

• Available as two-part SEMKIT package or pre-mixed frozen cartridge
• PR-187 adhesion promoter included in kit for repair applications
• Easy thawing procedure: 5 7 minutes in 120 F (49 C) water bath for frozen cartridges
• Pre-measured for convenient mixing and application with extrusion gun or spatula
• Storage: SEMKIT 60 80 F (15 27 C); Frozen 80 F ( 62 C) or below

Why PR-2001 Class B is Chosen for AOG / MRO

• Rapid cure enables faster turnaround for maintenance and repair operations
• Reliable adhesion across multiple substrates ensures minimal rework
• Versatile performance in extreme temperatures and chemical exposure
• Portable kits allow AOG teams to carry and deploy quickly
• Excellent repairability reduces downtime and material waste

Practical Suggestions for Your Team (AOG Mindset)

• Stock SEMKIT packages for routine maintenance and frozen cartridges for emergency AOG repairs
• Ensure team members are trained on mixing ratios, curing times, and surface preparation
• Maintain clean application tools and solvent supplies to avoid contamination
• Use PR-187 adhesion promoter when repairing over existing polysulfide sealants
• Document application and curing times for quality assurance and traceability

Manufacture / Aviation Spec Codes

• Manufacturer: PRC-DeSoto International, Inc.
• Product ID: PR-2001 Class B
• MIL/OEM/Export Codes: AMS 3277, AMS 2629, AMS 2471, AMS 4901, AMS 5516, MIL-C-5541, MIL-C-27725, MIL-PRF-85582, MIL-PRF-85285, MIL-PRF-23377