Densyl Mastic

A self-supporting petrolatum mastic for molding and filling irregular profiles.

Densyl Mastic is used for sealing, filling and caulking applications where a protective, waterproof and non-setting mastic is required. It can be used to contour tank bases and profile irregular surfaces. It is applied prior to the tape application and generally used in conjunction with primer, Denso Petrolatum Tapes or Denso Bituminous Tapes. Has a maximum service temperature of 194°F (90°C). Meets AWWA C217 Standard. It is also CSA Z245.30 compliant.

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  • Excellent sealing properties
  • No VOCs
  • Will adhere to metal, PVC, polyethylene and concrete
  • Not effected by water, acids and salts
  • Easy application
  • Inert and environmentally stable
  • Minimal surface preparation (SSPC SP 2-3)
  • Meets AWWA C217 Standard.
  • CSA Z245.30 component

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