Corrosion Under Insulation (CUI) Coating

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Protect your critical piping and equipment

Page last modified

April 11 2024

Hempel has developed a unique coating system to help protect from the hidden dangers of CUI.

In just two coats long term protection in hot wet environments such as those found below thermal insulation can be provided.

The system is based upon polysiloxane technology but with a unique fibre reinforced filler system which helps provide additional protection from cracking due to high temperatures and thermal cycling.

Pros & Limitations

Heat resistance up to 650°C covering multiple specification categories

Single pack eliminates mixing errors and reduces wastage

Can be applied to surfaces up to 200°C eliminating the need to shut down

Suitable for insulated and uninsulated equipment simplifying coating selection

Low halogen content – suitable for stainless steel

Limited range of colours

Specification

Specification Title	Specification Description
Areas of Application	For long term protection of hot pipework, equipment and other hot surfaces.
Application	Applied directly onto the steel substrate or with a suitable inorganic primer.
Certifications/ Licenses	Conforms to NACE SP-0198 2017 : systems SS-5, CS-6 and CS-8
Preparation	Can be applied to grit blasted and manually prepared surfaces.
Service Temperatures	-196°C to 650°C
NORSOK M-501 Approval	Approved in conjunction with inorganic zinc silicate primer.