Stopaq® Paste CZHT

Product Information

Stopaq® Paste CZHT is a corrosion preventing moulding paste that is especially designed for high temperature applications. It adheres extremely well to steel and factory applied pipeline coatings like PE, PP and FBE.

Stopaq® Paste CZHT is a non-toxic, cold-applied, and visco-elastic moulding paste, based on a compound consisting of non-crystalline, low-viscosity, non-crosslinked (fully amorphous), non-reactive Polyisobutene.

Stopaq® Paste CZHT is viscous at the indicated operating temperatures. Due to its liquid nature it has a set of unique properties like cold-flow into all irregularities of the substrate and self-healing of the complete coating system. The compound does not cure and is unable to build up internal stress. Stopaq® Paste CZHT is fully resistant to water and has a very low gas- and water vapour permeability.

Stopaq® Paste CZHT requires an additional flexible mechanical protective layer like Stopaq® Outerwrap. This improves impact and indentation resistance of the coating system and supports the self-healing ability of small damages like dents and cuts. Optionally a rigid mechanical protective layer can be applied on top like Stopaq® Polyester or Stopaq® Outerglass Shield.

Features:

Controlled cold flow providing permanent inflow into the finest pores of the substrate
Conforms to irregular shapes
Low surface tension; adheres on many types of dry substrates at a molecular level
Adhesion based on vanderWaals forces
Inert to ageing and weathering
No osmosis or underfilm migration of moisture
No cathodic disbondment
Environmentally friendly, no health and safety hazards to humans
Resistant to many chemicals like water, salts, acids, alkalis, polar solvents, etc.

Benefits:

Easy to apply
Easy to control application
Surface tolerant: no blasting techniques required, wire brushing is sufficient (ISO 8501-1: St 2)
Can be moulded onto various types of irregular shaped objects
Cathodic Protection (CP) of steel structures is not affected
Guaranteed performance

Application examples

Flanges: For protection against external corrosion and shaping of connection flanges, insulation flanges and blind flanges.
Valves: For protection against external corrosion and shaping of valves.
Irregular shaped parts: For protection against external corrosion and shaping of manhole covers, bolts & nuts, etc.
Cad-welds: For protection against external corrosion of welded CP-wire connections on underground pipelines (Pin-brazes) and underground steel structures protected by CP.
Pipe coating repairs: For protection against external corrosion and as filler for pipeline coating defects of e.g. 3LPE coated pipelines, prior to application of consecutive mechanical protective coating.