THIOKOL® RLP® 2378+ is a highly elastomeric, two-component, 100% solids polysulfide based coating for a variety of surface applications. It provides an impermeable yet flexible membrane with excellent resistance to chemical attack and environmental degradation.

Recommended Uses

  • Primary & secondary containment for water, oil, fuels or other chemical solutions
  • Floating roof tank decks
  • Earthen dike containment membrane*
  • Contaminated or deteriorated concrete*
  • Unsound coated surfaces
  • Asbestos containment
  • Isolate radon gas in residential and commercial buildings
  • When applied over geotextile fabric


  • Impermeable yet flexible membrane
  • 100% solids, zero VOC formulation
  • Resistant to broad range of fuels and chemicals
  • Maintains elasticity at very low temperatures
  • Resistant to UV degradation
  • Excellent crack-bridging capabilities
  • Can be applied directly over elastomeric expansion joint sealants