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CS-101 Butyl Rubber Sealant

For self-sealing joints in: Concrete Vaults, Septic Tanks, Box Culverts, Utility Vaults, Burial Vaults, and Vertical Panel Structures. Not intended for use in expansion joints or joints that move.

Technical Data


  • Provides permanently flexible watertight joints.
  • Low to high temperature workability: 30°F to 120°F (-1°C to 48°C)
  • Rugged service temperature: -30°F to +200°F (-34°C to +93°C)
  • Excellent chemical and mechanical adhesion to clean dry surfaces.
  • Sealed joints will not shrink, harden or oxidize upon aging.
  • Controlled flow resistance for application ease.
  • No priming normally necessary. When confronted with difficult installation conditions, such as wet concrete or temperatures below 40°F (4°C), priming the concrete will improve the bonding action. Consult Concrete Sealants Inc. for the proper primer to meet your application.


30-Day Immersion Testing: No visible deterioration when tested in 5% Caustic Potash, 5% Hydrochloric Acid, 5% Sulfuric Acid, and 5% saturated Hydrogen Sulfide.

One Year Immersion Testing: No visible deterioration when tested in 5% Formaldehyde, 5% Formic Acid, 5% Sulfuric Acid, 5% Hydrochloric Acid, 5% Sodium Hydroxide, 5% Hydrogen Sulfide and 5% Potassium Hydroxide.

Physical Properties

COLOR:   Black
SPECIFIC GRAVITY, 77°F: ASTM D71 1.35 to 1.40
DUCTILITY, 77°F: ASTM D113 10.0 cm
PENETRATION, CONE 77°F: ASTM D217 60-70 mm
FLASH POINT, C.O.C., °F: ASTM D92 450°F (232°C) minimum
FIRE POINT, C.O.C., °F: ASTM D92 450°F (232°C) minimum
Safety Data Sheets

Safety Data Sheet (PDF)
   US HazCom 2012

Installation Instructions
Recommended Specifications
Project Profiles
Certificate of Conformance