Tectyl 437D

TECTYL 437D is a military-grade corrosion preventive compound manufactured by Daubert Chemical Company specifically designed for long-term protection against atmospheric corrosion. This hot application preservative features a firm, wax-like film that provides exceptional barrier protection for metal surfaces. The product is officially approved under Military Specification MIL-PRF-11796C as a Class 3 preservative and sealing compound, meeting stringent US Military requirements for performance and reliability.

Properties

• Dry Film Color: Tan
• Film Type: Firm, Wax-like
• Liquid Appearance: Tan
• Non-Volatiles by Weight: >99%
• Non-Volatiles by Volume: >99%
• Specific Gravity: 0.92
• Weight per Gallon: 7.66 lbs
• V.O.C. (lbs/gal minus water): 0
• Viscosity: 35 cTs @ 212°F
• Penetration @ 77°F: 211 mm
• Flash Point: 350°F
• Dry Film Thickness: 1.5 mils
• Coverage: 145 sq.ft/gal
• High Flow Temperature: 162°F
• Melting Point: 211°F

Key Features

• Military-approved corrosion prevention (QPL-11796C listed)
• Virtually VOC-free formulation for minimal environmental impact
• Excellent barrier protection against moisture and atmospheric contaminants
• High temperature resistance with 350°F flash point
• Superior penetration characteristics (211 mm @ 77°F)
• Long-lasting protection in various environmental conditions
• Reliable performance in salt spray testing (500 hours ASTM B-117)

Ideal Applications

• Military Equipment: Protection of weapons, vehicles, and equipment during shipping and storage
• Maritime Use: Preservation of metal components exposed to salt air and high humidity
• Industrial Storage: Long-term protection of machined parts, tools, and equipment
• Aerospace Applications: Preservation of critical components during manufacturing and storage
• Automotive: Protection of underbody components, frames, and chassis parts

Application Guidelines

• Supplied in open head containers as a solid at room temperature
• Recommended application by dip method at 200°F
• Can be applied by hot airless spray at recommended temperatures
• Alternative application by brush or swab at warm temperatures
• Apply to clean, dry metal surfaces for optimal adhesion and performance

Storage and Handling

• Store in original containers at recommended temperatures
• Keep containers tightly closed when not in use
• Removal of both wet and dry film using mineral spirits or citrus-based cleaners
• Provides up to 5 years of indoor storage protection
• Delivers up to 1 year of outdoor storage protection under proper conditions