WS-8032S Class B is ultralight density, high temperature resistant sealant. It has a temperature range from -65°F (54°C) to 250°F (121°C), including intermittent exposure up to 360°F (182°C). The sealant is designed for fillet sealing of integral fuel tanks and other aircraft fuselage sealing applications. It is a two-part manganese dioxide cured polysulfide system. The uncured product is a low sag thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temperature forming a resilient rubber, exhibiting outstanding sealing characteristics.

RTU Product Type: 2K (2 component) Sealant

Application Area: Fuel Tank, Fuselage

Compatible Substrates & Surfaces: Coated Surfaces, Composites, Metal

Application Method: Extrusion, Spatula

Chemical Family: Polysulfides

Features: Excellent Fuel Resistance, Excellent Productivity, Fast Curing, Good Adhesion, High Temperature Resistance, Light Weight, Low Density, Low Sagging, Low Shrinkage, Oil Resistant, Room Temperature Curing, Thixotropic

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Features and Benefits
  • Fast curing system significantly increasing productivity.
  • Provides reduced weight by 30% delivering mechanical properties of standard density sealants
  • 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 installation Outstanding adhesion to multiple metals, composites, primers and coatings used in modern aircrafts

Applications & Uses

Markets
Applications
Application Area
Application Method
Compatible Substrates & Surfaces
Cure Method
Segment
Application Instructions
  • Clean the surface of substrates with appropriated cleaning solutions per specification(s) using an OEM approved lintfree 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.

Properties

Physical Form
Appearance
Black Extrudable
Uncured Properties
ValueUnitsTest Method / Conditions
Non Volatile Contentmin. 96%-
Specific Gravity (Mixed)approx. 1.15g/cc-
Weight Loss3.65%AMS2629 Type I
Ultimate Elongation (in 42 days, at 140°F)300%AMS2629
Tensile Strength (standard cure, in 14 days, at 77°F)300psi-
Service Temperature (continuous)(-)54 to 250°F-
Low Temperature Flexibility (no loss of adhesion or cracking)-65°F-
Service Temperature (intermittent exposure)max. 360°F-
Ultimate Hardness52 A-Shore A
Viscosity (Part A, Hardener)max. 3,000 poise
Viscosity (Part B, Base)14000 - 16000poise
Viscosity (Mixed)14,000 – 16,000poise
Mix Ratio (Part A, Hardener)7.55vol%
Mix Ratio(Part A, Hardener)12wt%
Mix Ratio (Part B, Base)100vol%
Mix Ratio (Part B, Base)100wt%
Cure Properties
Work Life B-1/2 B-2
Application Life (hrs) ½ 2
Tack free time (hrs) max. 5 max. 8
Cure time to 35 A Durometer (hrs) max. 7 max. 10

 

Regulatory & Compliance

Packaging & Availability

Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)
  • North America

Storage & Handling

Shelf Life
9 months (below 80°F), 30 days (below -40°F)
Storage Information

The shelf life of WS-8032S 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 60 days at temperatures below -40°F (- 40°C).