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Densyl
Mastic
By Denso

A protective, waterproof,
non-setting mastic for sealing, filling and caulking.
| 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
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| 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)
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Safety |
See MSDS for Densyl Mastic |
Quantity Estimates,
Densyl Mastic Blocks or Rounds
| Pipe Diameter |
Flanged Joint |
Flanged Valve |
Dresser Coupling |
| inches |
mm |
lbs |
kg |
lbs |
kg |
lbs |
kg |
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 Diameter |
Flanged
Joint |
Flanged
Valve |
Dresser
Coupling |
| inches |
mm |
ea. |
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 |

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