WS-8072 Class B
1 of 59 products in this brandWS-8072 Class B is a non-chromate corrosion inhibitive, light weight, fast curing polysulfide sealant. Two-part manganese cured polysulfide system with eco-friendly profile provides an effective barrier against the common causes of corrosion on aluminum and between dissimilar metals. AC-8072 B retains excellent performance characteristics at temperature excursions up to 360°F. Typical applications include sealing of fay surfaces of mating parts of aircraft structure to prevent corrosion and channeling leakage. WS-8072 Class B has outstanding retention of physical properties when exposed to aviation fuel and oils. It is a thixotropic paste with non-sag characteristics an able to be applied by an extrusion gun or with a spatula.
RTU Product Type: 2K (2 component) Sealant
Application Area: Aerospace Applications, Fuel Tank
Compatible Substrates & Surfaces: Aluminum, Aluminum Alloys, Coated Surfaces, Composites, Metal
Application Method: Extrusion, Spatula
Chemical Family: Polysulfides
Features: Corrosion Resistant, Excellent Fuel Resistance, Excellent Productivity, Fast Curing, Fungus Resistant, Good Adhesion, High Temperature Resistance, Light Weight, Low Density, Non-Sagging, Oil Resistant, Room Temperature Curing, Thixotropic
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Type Document Name
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Technical Data SheetWS-8072 Class B Technical Data Sheet
Enhanced TDS
Identification
- Chemical Family
- GBU
- RTU Product Type
- Categories
Application Information
- Cure Method
Applications
- Application Area
- Application Method
- Compatible Substrates & Surfaces
- Segment
Applications & Uses
- Application Instructions
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Clean the surface of substrates with appropriated cleaning solutions per specification(s) using an OEM approved lint-free cloth to remove dirt, grease, and processing oils just before the application of the sealant. Pour solvent onto the cloth to avoid contamination of solvent supply. Clean in small areas at a time. Wipe with a second dry cloth after each application to prevent redeposition of the contaminants on the surface. Repeat at least three times or more if required. Use fresh a fresh wiping cloth every time. Substrate composition and surface characteristics can greatly vary, which can affect sealant adhesion. It is recommended to determine adhesion characteristics of specific substrates prior to application of the sealant to get consistency.
Features
- Ready-to-Use Product Features
Features & Benefits
- Labeling Claims
- Features and Benefits Information
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This product has following features and benefits;
- Excellent corrosion protection for aluminum alloys and between dissimilar metals
- Fast curing system significantly increasing productivity
- Low density providing up to 30% weight saving
- Eco-friendly profile creates safe environment and eliminates hazardous waste
- Excellent elastomeric properties and strength retention after limited exposure to jet fuel, aviation gasoline, hydraulic fluids, oils, and lubricants
- High temperature resistance with intermittent operational temperature up to 360°F
- Outstanding adhesion to multiple metals, composites, primers, and coatings used in modern aircrafts
- Non-nutrient containing, fungus resistant
Packaging & Availability
- Regional Availability
Physical Properties
- Physical Form
- Appearance
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Dark brown
Properties
- Physical Properties
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Value Units Test Method / Conditions Low Temperature Flexibility (no loss of adhesion or cracking) -65 °F - Mix Ratio (by volume, hardner:base) 7.9:100 - - Mix Ratio (by volume, part B, base) 100 - - Mix Ratio (by weight, hardner:base) 12:100 - - Mix Ratio (by weight, part B, base) 100 - - Non-Volatile Content min. 96 % - Peel Strength (JRF/3%SW (50/50) 6 cycles) 35/34 pli AMS 2629, IM 7/5250-4 Peel Strength (at 140°F 2-day immersion, magnesium, 3%SW) 32 pli AMS 4376 Peel Strength (at 140°F 2-day immersion, magnesium, AMS2629 JRF) 35 pli AMS 4376 Peel Strength (at 140°F 2-day immersion, magnesium, MIL-PRF-23699) 37 pli AMS 4376 Peel Strength (at 140°F 2-day immersion, magnesium, MIL-PRF-7808) 33 pli AMS 4376 Peel Strength (at 140°F 2-day immersion, magnesium, MIL-PRF-83282) 37 pli AMS 4376 Peel Strength (at 140°F, JRF 7-days immersion) 41 pli IM 7/5250-4, AMS 2629 Peel Strength (at 140°F, graphite/epoxy was immersed in JRF/3%SW (50/50) for 7 days) 39/41 pli AMS 2629 Peel Strength (at 140°F, graphite/epoxy was immersed in JRF/3%SW (50/50) for 7 days) 39/41 pli AS 4/3501-6 Peel Strength (at 140°F, titanium was immersed in JRF for 7 days) 37 pli AMS 4911 Peel Strength (at 140°F, titanium was immersed in JRF for 7 days) 37 pli AMS 2629 Peel Strength (at 140°F, titanium was immersed in JRF/3%SW (50/50) for 7 days) 40/39 pli IM 7/5250-4 Peel Strength (at 140°F, titanium was immersed in JRF/3%SW (50/50) for 7 days) 40/39 pli AMS 2629 Peel Strength (at 140°F, titanium was immersed in JRF/3%SW (50/50) for 7 days) 44/39 pli AMS 2629 Peel Strength (at 140°F, titanium was immersed in JRF/3%SW (50/50) for 7 days) 44/39 pli AMS 4911 Peel Strength (cad plated steel (4130 per QQ-P-416, 3%SW 2-day immersion at 140°F)) 39 pli - Peel Strength (cad plated steel (4130 per QQ-P-416, JRF 2-day immersion at 140°F)) 32 pli AMS 2629 Peel Strength (cad plated steel (4130 per QQ-P-416, MIL-PRF-23699 2-day immersion at 140°F)) 32 pli - Peel Strength (cad plated steel (4130 per QQ-P-416, MIL-PRF-7808 2-day immersion at 140°F)) 40 pli - Peel Strength (cad plated steel (4130 per QQ-P-416, MIL-PRF-83282 2-day immersion at 140°F)) 38 pli - Peel Strength (graphite/epoxy, JRF 7-days immersion at 140°F) 35 pli AMS 2629, AS 4/3501-6 Peel Strength (graphite/epoxy, JRF/3%SW (50/50) 6 cycles) 38/37 pli AMS 2629, AS 4/3501-6 Peel Strength (titanium, JRF/3%SW (50/50) 6 cycles) 41/35 pli AMS 4911, AMS 2629 Service Temperature (continuous, operational range) -54 to 250 °F - Service Temperature (intermittent exposure) max. 360 °F - Ultimate Hardness 45 Shore A - Viscosity 10,000 - 15,000 poise - - Cured Properties
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Value Units Test Method / Conditions Low Temperature Flexibility (no loss of adhesion or cracking) -65 °F - Nominal Service Temperature (continuous, operational range) -54 to 250 °F - Nominal Service Temperature (intermittent exposure) max. 360 °F - Non-Volatile Content min. 96 % - Slump (B-1/2, B-2) max. 0.1 inch - Specific Gravity max. 1.15 - - Tensile Strength (at 77°F, standard cure 14 days) min. 200 psi - Ultimate Elongation min. 250 % MIL-PRF-81733 Ultimate Hardness 45 Shore A Shore Durometer Scale - Component B
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Value Units Test Method / Conditions Viscosity (base) 10,000 - 15,000 poise - - Uncured Properties
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Value Units Test Method / Conditions Mix Ratio (by volume) 100:7.9 - - Mix Ratio (by weight) 100:12 - - Viscosity (mixed) 10,000 - 15,000 poise - - Typical Properties
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Value Units Test Method / Conditions Application Temperature max. 360 °F - Base Polysulfide - - Peel Strength (AMS 4376 (magnesium), 3%SW 2-day immersion at 140°F, 100% CF) 32 pli - Peel Strength (AMS 4376 (magnesium), JRF 2-day immersion at 140°F, 100% CF, AMS 2629) 35 pli - Peel Strength (AMS 4376 (magnesium), MIL-PRF-23699 2-day immersion at140°F, 100% CF) 37 pli - Peel Strength (AMS 4376 (magnesium), MIL-PRF-7808 2-day immersion at140°F, 100% CF) 33 pli - Peel Strength (AMS 4376 (magnesium), MIL-PRF-83282 2-day immersion at 140°F, 100% CF) 37 pli - Peel Strength (AMS4911 (Titanium), JRF 7-days immersionat 140° F, 100% CF, AMS 2629) 37 pli - Peel Strength (AMS4911 (Titanium), JRF/3% SW (50/50) 6 cycles, 100% CF, AMS 2629, ply side) 35 pli - Peel Strength (AMS4911 (Titanium), JRF/3% SW (50/50) 6 cycles, 100% CF, AMS 2629, tool side) 41 pli - Peel Strength (AMS4911 (Titanium), JRF/3%SW (50/50) 7-days immersion at140° F, 100% CF, AMS 2629, ply side) 39 pli - Peel Strength (AMS4911 (Titanium), JRF/3%SW (50/50) 7-days immersion at140° F, 100% CF, AMS 2629, tool side) 44 pli - Peel Strength (AS 4/3501-6 (Graphite/Epoxy), JRF 7-days immersion at 140° F, 100% CF, AMS 2629) 35 pli - Peel Strength (AS 4/3501-6 (Graphite/Epoxy), JRF/3%SW (50/50) 6 cycles, 100% CF, AMS 2629, ply side) 37 pli - Peel Strength (AS 4/3501-6 (Graphite/Epoxy), JRF/3%SW (50/50) 6 cycles, 100% CF, AMS 2629, tool side) 38 pli - Peel Strength (AS 4/3501-6 (Graphite/Epoxy), JRF/3%SW (50/50) 7-days immersion at 140° F, 100% CF, AMS 2629, ply side) 41 pli - Peel Strength (AS 4/3501-6 (Graphite/Epoxy), JRF/3%SW (50/50) 7-days immersion at 140° F, 100% CF, AMS 2629, tool side) 39 pli - Peel Strength (IM 7/5250-4 (BMI) (ply/ply), JRF/3%SW (50/50) 6 cycles, 100% CF, AMS 2629, ply side) 34 pli - Peel Strength (IM 7/5250-4 (BMI) (ply/ply), JRF/3%SW (50/50) 7-days immersion at140° F, 100% CF, AMS 2629, ply side) 39 pli - Peel Strength (IM 7/5250-4 (BMI) (tool/ply), JRF 7-days immersion at 140° F, 100% CF, AMS 2629) 41 pli - Peel Strength (IM 7/5250-4 (BMI) (tool/ply), JRF/3%SW (50/50) 6 cycles, 100% CF, AMS 2629, tool side) 35 pli - Peel Strength (IM 7/5250-4 (BMI) (tool/ply), JRF/3%SW (50/50) 7-days immersion at140° F, 100% CF, AMS 2629, tool side) 40 pli - Peel Strength (cad plated steel (4130) per QQ-P-416, 3%SW 2-day immersion at140°F, 100% CF) 39 pli - Peel Strength (cad plated steel (4130) per QQ-P-416, JRF 2-day immersion at 140°F, 100% CF, AMS 2629) 32 pli - Peel Strength (cad plated steel (4130) per QQ-P-416, MIL-PRF-23699 2-day immersion at140°F, 100% CF) 32 pli - Peel Strength (cad plated steel (4130) per QQ-P-416, MIL-PRF-7808 2-day immersion at140°F, 100% CF) 40 pli - Peel Strength (cad plated steel (4130) per QQ-P-416, MIL-PRF-83282 2-day immersion at140°F, 100% CF) 38 pli - Storage Temperature max. 27 °C - Storage Temperature (premixed and frozen material is a minimum of 30 days) max. -40 °C - Storage Temperature (unopened container) max. 27 °C -
Regulatory & Compliance
- OEM Specifications
Storage & Handling
- Storage Information
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The shelf life of WS-8072 Class B is 9 months from the date of packaging when stored below 80°F (27°C) in the original unopened container.
The storage life of premixed and frozen material (PMF) is a minimum of 30 days at temperatures below -40°F (-40°C).).
- Shelf Life
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30 days (below -40°F), 9 months (below 80°F)