Cheray Polymer type HMS Mastic

Product description:

HMS Mastic heat shrinkable sleeve 2-layer system are engineered for ready-to-fit assembly for the corrosion protection of field girth weld joints in water supply or gas distribution and transmission networks, especially for use in low & middle shear or low stress environments in moderate climates. HMS is compatible with standard pipe coatings, can also be used for coating bare, replacement pipe sections and large radius bends. The system is designed to be applied with minimum preheating and is ideal for large diameter water pipe.

Cheray Polymer type HMS Mastic structure system:

First layer: low preheat middle shear strength half-rigid mastic sealant
Second layer: extruded radiation cross linked heat shrinkable high density polyethylene backing with TIP (Temperature Indicator Pattern)

The coating meets the requirements of the following standards:

EN 12068:2002 – C 50
ISO 21809-3:2016, Type 14A

Advantages and features of the system:

Does not require the application of epoxy primer – time saving!
Excellent mastic adhesive allow for lower installation pre-heat temperature and super bonding to coating, offer fully resistant to shear forces induced by soil and thermal movements
Superior cathodic disbondment and offers the optimum barrier long term protection against corrosion

Covering the joints of welded joints for pipes in in fabric insulation PE or PP
Easy application at low temperatures, minimum application surface temperature +50°C
Pattern backing provides a “heating temperature indicator” for application of heat ensures correct application heating