WS-8035 Class B
1 of 4 products in this brandRoyal Sealants WS-8035 Class B is a rapid-cure and lightweight polysulfide sealant specifically formulated for fuel tank sealing applications in the space exploration industry. Its fast curing properties and low weight make it an ideal choice for ensuring secure and reliable seals in the demanding environment of space exploration.
RTU Product Type: Sealant
Application Area: Aerospace Applications, Fuel Tank, Fuselage
Compatible Substrates & Surfaces: Composites, Metal, Plastics
Application Method: Extrusion, Spatula
Chemical Family: Polysulfides
Features: Fast Curing, High Temperature Resistance, Light Weight, Low Sagging, Low Shrinkage, Rapid Curing Speed, Room Temperature Curing, Thixotropic
Enhanced TDS
Identification
- Chemical Family
- GBU
- RTU Product Type
- Categories
Applications
- Application Area
- Application Method
- Compatible Substrates & Surfaces
- Segment
Applications & Uses
- Application Instructions
-
- 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 sealant. Pour solvent onto cloth to avoid contamination of solvent supply. Clean in small areas at a time. Wipe immediately after application to prevent redeposition of contaminants on the surface. Repeat at least three times or more if required. Use 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 sealant to get consistency.
- Recommended Application: Fuel Tank Sealant
Features
- Ready-to-Use Product Features
Features & Benefits
- Labeling Claims
- Features and Benefits
-
- Fast curing system significantly increasing productivity
- Excellent thermal performance
- Excellent elastomeric properties and strength retention after prolonged exposure to jet fuel, aviation gasoline, hydraulic fluids, oils and lubricants
- Less than 1% linear shrinkage
- Low VOC, eco-friendly sealant which reduces hazardous impact during installllation
- Outstanding adhesion to multiple metals, composites, primers and coatings used in modern aircrafts
Packaging & Availability
- Regional Availability
Physical Properties
- Physical Form
Properties
- Cure Properties
-
Work Life B-2 Application Life (hrs) 2 Tack free time (hrs) <7 Cure time to 35 A Durometer (hrs) <8 - Cured Properties
-
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. 97 % - Specific Gravity (mixed) max. 1.1 - - Tensile Strength (at 77°F, standard cure 14 days) 258 psi - Ultimate Elongation (at 140°F, 42 days, AMS 2629) 250 % - Ultimate Hardness 45 Shore A Shore Durometer Scale Volume Resistivity (tested at 10% RH) 6 x 10⁹ Ω-m - Weight Loss (JRF VII and BMS3-11) 3.5 % Internal Test Method - Uncured Properties
-
Value Units Test Method / Conditions Mix Ratio (by volume) 100:7.06 - - Mix Ratio (by weight) 100:12 - - Viscosity (mixed) 3900 cPs - - Component B
-
Value Units Test Method / Conditions Viscosity (base) 11,000 - 16,000 cPs - - Typical Properties
-
Value Units Test Method / Conditions Application Temperature 54 - 121 °C - Base Polysulfide - - Peel Strength (100% cohesive failure, Composites, Soaked in JFR) 30 pli - Peel Strength (100% cohesive failure, Composites, Soaked in NaCI) 33 pli - Peel Strength (100% cohesive failure, Fuselage primers and topcoats (epoxy, urethane, inorganic), Soaked in JFR) 30 pli - Peel Strength (100% cohesive failure, Fuselage primers and topcoats (epoxy, urethane, inorganic), Soaked in NaCI) 33 pli - Peel Strength (100% cohesive failure, IFT coatings and primers (epoxy, urethane based), Soaked in JFR) 30 pli - Peel Strength (100% cohesive failure, IFT coatings and primers (epoxy, urethane based), Soaked in NaCI) 33 pli - Peel Strength (100% cohesive failure, Repairability Aged Surface, Adhesion to aged surface) min. 20 pli - Peel Strength (100% cohesive failure, Repairability Fresh Surface, Adhesion to fresh surfaces) min. 20 pli - Storage Temperature (shelf life is 9 months) max. 27 °C - Storage Temperature (storage life of premixed and frozen material is a minimum of 42 day) max. -40 °C - - Component A
-
Value Units Test Method / Conditions Viscosity (uncured, hardener) max. 3,000 cPs -
Storage & Handling
- Storage and Shelf Life Information
-
- The shelf life of WS-8035 Class B is 9 months from the date of manufacturing 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 42 days at or below temperatures of -40°F (-40°C).
- Shelf Life
-
42 days (premixed and frozen material, when stored below temperatures of -40°F), 9 months (when stored below 80°F)