Viscotaq Specification for Sealing System at Chime Area of Storage tanks

Viscotaq Specification for Sealing System at Chime Area of Storage tanks
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VISCOTAQ PE Outer Wrap is a Heavy Duty polyethylene backing in the form of a roll, calendered with an adhesive. The tape is used as an Outer Wrap for the mechanical protection of VISCOTAQ products against soil stress, back fill procedures and other forms of mechanical impact. Furthermore, it gives a continuous external pressure to the VISCOTAQ corrosion prevention inner material and accelerates the process of the formation of a homologue continuous inner coating. VISCOTAQ PE Outer Wrap is produced from MDPE/HDPE and is wrapped with a 50% overlap onto the VISCOTAQ corrosion prevention coating. The material is applied onto the substrate by hand or by means of a tape wrap machine.

General information

VISCOTAQ is a unique viscous-elastic non crystalline a-polar polyolefin for the protection of shaped and non-shaped substrates. VISCOTAQ offers the pipeline industry an unrivaled technology when it comes to corrosion prevention. Unlike other coatings VISCOTAQ always has a permanent and intimate contact with
the surface of a substrate. The viscosity and elasticity modulus of the material are designed in such a way that the viscosity modulus provides permanent wetting characteristics hence forcing the material to flow into the pores and anomalies of the substrates whereas the elasticity modules provides the strength and elasticity of a solid.

Use and application

  • As a mechanical outer wrap up to surface temperatures of +85° C/+185° F
  • Continuous operating temperature up to 85° C/+185° F
  • Application temperature > +5° C/+41° F


  • Self adhesive MDPE/HDPE Outer Wrap
  • Service temperature range -34° C/-29.2° F up to +85° C/+185° F
  • Extremely flexible
  • High aging resistance
  • Overlap 50%
  • UV resistant
  • Strong adhesion to Viscowrap Inner Wrap
  • Application by hand or machine
  • Cold application, no open fire
  • Excellent impact resistance
  • Excellent abrasive resistance
  • Standard color: in black

Materials Required

  1. Viscotaq Outerwrap. Consists of: pressure sensitive adhesive with reinforcement and covered with a polyester cloth or covered with another release liner (double sided). Packaged in rolls 4 inch by 24 feet, 30 mils. Color gray.

  2. Visotaq EZ Paste. Available in cartridges 10 oz ( 310 ml) or 1 liter (1.06 quarts).

  3. Applicator gun. High trust ratio bulk applicator gun, hand, pneumatic or electric. Used to apply EZ Paste.

  4. Air compressor, used for drying surfaces.

  5. Seam roller, used to apply EZ Wrap.