TECTYL 511M CLASS II

TECTYL 511M Class II is a high-performance, solvent cutback, water-displacing corrosion preventive compound manufactured by Daubert Chemical Company, Inc. This military-grade protective coating forms a semi-firm, oily, translucent amber film that offers superior protection for ferrous and non-ferrous metals. It is QPL approved and meets multiple military specifications including MIL-PRF-16173E, Grade 5, for Class II; MIL-C-23411A, Type II; and MIL-P-116J, Type P-21. With a proven history dating back to the 1939 Squalus submarine salvage operation, TECTYL 511M Class II continues to be the trusted choice for industrial, military, and transportation applications requiring effective water displacement and long-term corrosion protection during covered shipment and indoor storage.

Properties

• Dry Film Color: Light amber, translucent
• Film Type: Semi-firm, oily
• Flash Point (PMCC): Minimum 106°F
• Density @ 77°F (25°C): 7.1 ± 0.1 lbs./gallon
• Specific Gravity @ 60°F (15.6°C): 0.85
• Recommended Dry Film Thickness: 0.4 mils over metal profile
• Wet Film Thickness: 0.7 mils
• Theoretical Coverage: 2,586 sq. ft./gallon @ recommended DFT
• Non-Volatile Content: 68 ± 6% by weight, 64.5 ± 3% by volume
• VOC Content: 2.8 lbs./gallon maximum (340 grams/liter)
• Approximate Dry to Touch Time: 1 hour @ 77°F (25°C)
• Cure Time: 24 hours
• Humidity Resistance: 750 hours (ASTM D-1748)
• Protection Duration: Up to 2 months outdoor, 1.5 years indoor protection

Key Features

• QPL Approved Protection: Meets rigorous military specifications for demanding environments
• Superior Water Displacement: Actively displaces water and saline solutions from metal surfaces
• Non-Staining Formula: Will not stain silver or silver-plated metals
• Fast Drying Properties: Dries to touch in approximately 1 hour at room temperature
• Low VOC Content: Contains reduced volatile organic compounds for lower environmental impact
• Versatile Application: Can be spray, dip, brush, or flush applied for various component shapes
• Translucent Film: Light amber coating allows for visual inspection of protected parts
• Humidity Resistance: Passes 750 hours in 100% relative humidity testing
• Historical Proven Performance: Used by the Navy in the 1939 Squalus submarine salvage operation

Ideal Applications

Military Equipment:

• Components during transport and storage
• Precision parts requiring water displacement
• Critical spare parts preservation
• Weapons systems components (non-operational storage)
• Military vehicle parts during shipment

Industrial Manufacturing:

• Machined components during indoor storage
• Ferrous and non-ferrous metal parts
• Bearings and precision components
• Assembly line parts between manufacturing stages
• Tools and equipment storage

Transportation Components:

• Vehicle parts during shipping and assembly
• Aircraft components during indoor storage
• Marine equipment (non-immersed applications)
• Rail transport components
• Heavy equipment parts during transit

Specific Applications:

• Cummins diesel generators with HPI Fuel System (for storage of 24-60 months)
• Steel and phosphated surfaces requiring long-term protection
• Interior surfaces of machinery
• Parts requiring temporary protection during manufacturing processes

Application Guidelines

1. Surface Preparation: Metal surfaces must be clean, dry, and free of rust, oil, and mill scale
2. Temperature Range: Daubert recommends that metal substrate temperature be 50-95°F (10-35°C) at time of application
3. Product Preparation: Use as supplied; ensure uniform consistency prior to use
4. Stirring Requirements: Continued stirring generally not required
5. Application Methods: Can be spray, dip, brush, or flush applied
6. Ambient Conditions: Apply when ambient and product temperature is 50-95°F (10-35°C)
7. Thinning: DO NOT THIN TECTYL 511M Class II; incorrect thinning will affect film build, dry time, and product performance
8. Cold Storage Issues: If product thickens due to cold storage or loss of solvent during use, contact Daubert Chemical Company
9. Precautions: Avoid direct contact with intake manifolds or fuel system components to prevent damage to sensors or valves

Equipment Recommendations:

• Spray equipment with Tungsten Carbide Nozzle Tips (0.011″ to 0.015″ orifice size)
• Pumps with ratios of 15:1 or greater for efficient application
• High-pressure fluid hoses (minimum 3/8 inches diameter for applications under 50 feet)
• Dipping tanks with appropriate ventilation
• Flushing equipment for internal cavities
• Appropriate personal protective equipment (PPE)

Storage and Handling

• Product Storage: Store at temperatures between 50-95°F (10-35°C)
• Agitation: Mild agitation recommended prior to use
• Ventilation Requirements: Adequate ventilation required for cure and to prevent formation of combustible liquid
• Safety Precautions: Partially cured film should not be exposed to ignition sources such as flares, flames, sparks, excessive heat, or torches
• Removal Methods: Can be removed with TECTYL HPS solventborne thinner, vapor degreasing, hot alkaline wash, or low pressure steam
• Fabric Removal: Can be removed from fabrics by normal dry cleaning procedures
• Painted Surface Caution: Avoid use of chlorinated or highly aromatic solvents when removing from painted surfaces
• Chemical Compatibility: Addition of any product over or under this coating is not recommended
• Authorization: Written authorization required from Daubert Chemical Company if a product other than their recommended product is required
• Safety Information: Refer to Daubert’s Material Safety Data Sheet for additional handling and first aid information
• Identification Numbers: Available under National Stock Numbers (NSN): 55 Gallon Drum (8030-01-396-5739), 5 Gallon Can (8030-01-347-0973), 1 Gallon Can (8030-01-396-5754), 1 Pint Can (8030-01-396-5773)