ElastiSeal® WSS-2M is a high-viscosity, non-drying, butyl-based sealer used for automotive weather strips. It is designed to prevent rust and seal doors, trunks, and liftgate flanges from air and moisture penetration. This pumpable sealer does not harden or gel over time, even at extreme temperatures.

Product Type: Sealer, Solventborne Adhesive

Application Area: Doors, Flanges, Liftgate, Weatherstripping

Features: Corrosion Resistant, Easy To Finish, Excellent Moisture Resistance, Excellent Pumpability, Excellent Rust Protection, Good Sagging Resistance, Good Weather Stability, Long Shelf Life

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Features & Benefits
  • Will not harden or gel over time even at extreme temperatures
  • Excellent weather resistance and non-sag viscosity even at higher temperatures
  • Seals and protects against corrosion
  • Easy, consistent application

Applications & Uses


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.25g/cc
Press Flow Viscosity30.0secASTM D2452
Insertion Forcemax. 4.4NGM9899P
Solid Contentmin. 90%ASTM D2369
Ash Content (at 760°C, 1h)max. 35%ASTM D5630
Volume Contractionmax. 40%FLTM BV 8-1
Sag Resistance (at 40°C)max. 0.10inchASTM D2202
Technical Properties
Property Typical Value Test Method
Staining No staining


Low Temperature Flexibility Flexible (at -29°C)


2 weeks Heat-aging (at 88°C) Excellent
2 weeks 100% Humidity Excellent
240 hours H2O Immersion Excellent
After 2 Thermal Cycles Excellent

Meets all or most requirements of:

  • Chrysler : MS-CD-916 Type E
  • Ford : ESB-M4G31-A2
  • Toyota : TS-K6526G

Packaging & Availability

Packaging Type
Regional Availability
  • North America
Typical Packaging
  • 5 gallon pail
  • 55 gallon drum

Storage & Handling

Shelf Life
12 Months
Storage Conditions

Store material in original unopened packaging at temperatures between 4°C to 38°C (40°F to 100°F).