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Stop It® Pipe Repair System

Viscotaq® ViscoSealant

Corrosion Control Products

Viscotaq® ViscoSealant

A quick, economical solution to seal tank chimes, cable and pipe penetrations, and more

With its cartridge-dispenser system, ViscoSealant delivers a simple method for sealing above-ground flanges and gaps in tank chimes and for waterproofing cable and pipe penetrations.

It has the same advanced chemistry as the other Viscotaq® products, meaning this formulated polymer retains permanent wetting characteristics, allowing the viscous-elastic polymer to flow into the pores and anomalies of the substrate. It has immediate, long-lasting adhesion to steel, PE, PP, epoxy, polyurethane, PVC, and more without roughening.


ViscoSealant is specially designed for a wide range of structural applications where water leaks are a problem.

Kit Includes

It’s the solution Sekisui Specialty Chemicals America reached for when 13 tanks at its polyvinyl alcohol plant in Pasadena, Texas needed to be resealed.


ViscoSealant is specially designed for a wide range of structural applications where water leaks are a problem.

  • No cure or hardening time required
  • Storage stable (dry/cool) with an unlimited shelf life


The elasticity of the product gives it the strength and feel of a solid yet always remains in a semi-solid state that provides high-impact strength and allows for a high resistance against sheering.

Viscotaq® ViscoSealant Leak Repair Sealant

Shelf Life: Two years from date of purchase when stored at 40° to 83°F (5° to 28°C)
Color: White or black
Tensile Strength: 24,950 PSI / in width/172 MPa
(ASTM D 3039).

Flexural Strength: 12,005 psi/82.77 MPa (ASTM 790)
Durometer Hardness: 63 (Shore D) (ASTM D 2240)
Pressure Retaining Capability: Recommended for pressures up to 400 psi (28 kg/cm2)
Temperature Resistance: Continuous: -20° to 250°F (-29° to 121°C)
Intermittent: 250° to 500°F (121° to 260°C)
Set Time: 3 to 5 minutes at 50° to 80°F (10° to 27°C)
Cure Time: at 1/2`` thick (1.27 cm) - 30 minutes

Part Number:
White/Black Stop It® Pipe Repair System Size
Packaged 10 per ctn Weight
24786 / 24257 2`` x 4' / 5.08cm x 1.2m 4 / 1.8
21278 / 21225 2`` x 12' / 5.08cm x 3.6m 6 / 2.7
41278 / 41225 4`` x12' / 10.16cm x 3.6m 8 / 3.6
42578 / 42525 4`` x25' / 10.16cm x 7.62m 14 / 6.3

Glass Transition Temperature
ASTM E1356-03
Material state
DIN 53479
Caulking material
Melting point
ASTM E1356-03
Yield point
ISO 3219
Water Vapor Permeability
<4 *10-4 g/day/m2/Pa
ASTM E96/96M-10
Water Absorption
ISO 62
Water Penetration
<0.14% (1800 hrs, 6V, 3% NaCl) ASTM G9-87 Volume Resistivity >2.2* 1013 ohm*cm
ASTM D257-07
Surface Resistivity
>5.6* 1015 ohm*m2
ASTM D257-07
Dielectric Strength
>17.5 kV/mm
ASTM D149-09
Wet Adhesion Test
CSA Z245-20-06 Sec 12.14
Salt Spray test
Excellent, no undercreep, no corrosion, rating 10
ASTM B117-09

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