Densyl Mastic, Protective, Waterproof, Non-setting Mastic, by Denso

SKU#: Denso Densyl Mastic: Protective
A protective, waterproof, non-setting mastic for sealing, filling and caulking.

Grouped product items

  • Description 

    Description

    Densyl Mastic is a cold applied self-supporting mastic. It is a petrolatum compound containing inert siliceous fillers and vegetable fibers.

    Uses

    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.

    Features

    • 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)

    Application

    Prepare surfaces by removing all loose scale, rust or other foreign matter in accordance to SSPC SP2 "Hand Tool Cleaning" or SP3 "Power Tool Cleaning". High pressure water wash of 3,000 - 7,000 psi is also suitable. Apply a thin film of appropriate primer to the surface. Then, by hand application, mold the mastic to a rounded configuration to fill irregular shapes and reduce sharp edged surfaces.

    Specifications

    Properties

    English

    Metric

    Specific Gravity
    Specific Volume
    Flash Point
    Temperature Range

    1.39
    20 in3 / lb
    > 356oF
    -50oF to 194oF

    1.39
    720 cm3 / kg
    > 180oC
    -46oC to 90oC

    Advantages

    • Withstands high ambient temperatures
    • Goes on easily
    • No primer required
    • No waiting for drying or curing

    Packaging

    • Blocks
      6 each 6.6 lb blocks = 39.6 lbs per case
      (6 each 3 kg blocks = 19 kg per case)
    • Rounds
      12 each 2.17 lb round = 26 lbs per case
      (12 each 1 kg round = 12 kg per case)
    • Blankets
      5 each 10" x 36" = 44 lbs per case
      (5 each 250 mm x 900 mm = 20 kg per case)

    Safety

    MSDS for Densyl Mastic

  • Quantity Estimates, Densyl Mastic Blocks or Rounds

    Pipe DiameterFlanged JointFlanged ValveDresser Coupling
    inchesmmlbskglbskglbskg
    4
    6
    8
    10
    12
    14
    16
    18
    20
    24
    30    		 100
    150
    200
    250
    250
    250
    400
    450
    500
    600
    750    		 7
    9
    11
    14
    16
    18
    20
    24
    26
    30
    40    		 3.15
    4.05
    4.95
    6.30
    7.20
    8.16
    9.00
    10.8
    11.7
    13.5
    18.0    		 21
    27
    33
    42
    48
    54
    60
    72
    78
    90
    120    		 9.45
    12.15
    14.85
    18.9
    21.6
    24.3
    27.0
    32.4
    35.1
    40.5
    54.0    		 18
    22
    30
    38
    46
    52
    56
    66
    72
    86
    104    		 8.1
    9.9
    13.5
    17.1
    20.7
    23.6
    25.2
    29.7
    32.6
    39.0
    41.2

     

    Quantity Estimates, Densyl Mastic Blankets

    Pipe DiameterFlanged
    Joint    		Flanged
    Valve    		Dresser
    Coupling
    inchesmmea.ea.ea.
    10
    12
    14
    16
    18
    20
    24
    30
    36
    54    		 250
    300
    350
    400
    450
    500
    600
    750
    900
    1350    		 2
    2.5
    2.5
    3
    3.5
    4
    4.5
    5
    6
    12    		 6
    7.5
    17.5
    9
    10.5
    12
    13.5
    15
    18
    36    		 2
    2.5
    2.5
    3
    3
    4
    4
    6
    6
    12