PPG Aerospace/PRC DeSoto® Sealant A/B Class B2 Sem Kit 654 BM5-45, 6oz PR1776M2-60Z

PR-1776M Class B is a low density, high temperature aircraft integral fuel tank sealant. It has a service temperature range from -65°F (54°C) to 250°F (121°C), with very limited excursions up to 360°F (182°C). This material is designed for fillet sealing of fuel tanks and other prolonged exposure to aircraft fuels both jet fuel and aviation gas, and will resist limited contact to diphosphate ester based hydraulic fluids.
Part number PR1776M2-60Z Class B is a two-part, manganese dioxide cured Permapol® P-5 modified polysulfide. The uncured material is a low sag, thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates. PR-1776M Class B is designed to be a direct replacement for PR-1776 Class B.

BENEFITS

• Flexibility – No cracks after bending 180 degrees
• Repairability to itself- Excellent to both freshly cured as well as fuel aged and abraded fillets
• Resistance to other fluids – Excellent resistance to water, alcohols, petroleum-base and synthetic lubricating oils and petroleum-base hydraulic fluids.
• Fungus resistance
• Shaving and sanding- No rolling or tearing

TECHNICAL INFORMATION

• Part A Color: Black
• Part B Color: Off white
• Mixed Color: Dark Brown
• Cured Specific gravity: 1.29
• Nonvolatile content %: 94
• Pigment contents %: 15

SPECIFICATION

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