PPG SigmaDur 550 H

Part A and B: UN1263 (Class: 3, Pk Grp: III)
Formally PPG SigmaDur 568. A 2 Part High Solids, High Build Polyurethane Gloss Finish.
Available in 4 and 20 Litres. Tintable to BS4800, RAL Colours
From £87.98 £73.32
In stock
Only %1 left
Product Description

PPG SigmaDur 550H (formerly SigmaDur 568) is a 2 pack high solids, high build polyurethane that offers a high gloss finish, part of the ISO 12944-6 System for Steel C5-I High

Best Uses

PPG Sigmadur 550 H has been developed as a high build, high solids polyurethane top coat that can be applied directly to metal. Sigmadur 550 H offers good colour and gloss retention. Further benefits offered from this high build coating is its resistance to splash of mineral and vegetable oils as well as paraffin’s, aliphatic petroleum products and mild chemicals.

Added to the fact that Sigmadur 550 H is available in most BS4800 and RAL Colours along with curing temperatures as low as -5°C. Sigmadur 550H is becoming a firm favourite with specifiers and facility managers worldwide.


Blast clean steel to ISO-Sa2.5. If recoating is require the is no time window meaning that recoating can take place even after long atmospheric exposure by either airless spray, brush or roller.

Technical Details


  • Part of the ISO 12944-6 System For Steel C3 High at 80 microns DFT
  • Part of the ISO 12944-6 System For Steel C4 High at 50 microns DFT
  • Part of the ISO 12944-6 System For Steel C4 High at 120 microns DFT
  • Part of the ISO 12944-6 System For Steel C4 High at 50 microns DFT
  • Part of the ISO 12944-6 System For Steel C5-I High at 80 microns DFT
  • Part of the ISO 12944-6 System For Steel C5-I High at 50 microns DFT
  • Network Rail System N2 (XN90) at 50 microns DFT
  • Network Rail System M21 (XM92) at 50 microns DFT
  • Network Rail System M24 (XM92) at 50 microns DFT
  • Norsok M-501 System 1 (Pre Qualified)
  • Norsok M-501 System 2B
  • Norsok M-501 System 6A
  • Norsok M-501 System 6B


  • Excellent resistance to atmospheric exposure conditions
  • Superior colour and gloss retention
  • Non-chalking, non-yellowing
  • Able to cure at temperatures as low as -5 degrees C

Technical Info

Components: Two Part
Type: Aliphatic Acrylic Polyurethane
Finish: Gloss
Stock Colours: White and Black
Tintable: Yes, upon request. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 330.0g per Litre
Volume Solids: 70%
Suitable Substrates: For metal surfaces
Application Method: Brush, Roller, Air Atomised Spray or Airless Spray
Theoretical Coverage: 14 m2 per litre at 50 microns
Wet Film Thickness (WFT):  
Dry Film Thickness (DFT): 50 - 150 microns
Induction Time: -
Pot Life: 2.5 hours at 20°C
Touch Dry: 3 hours at 20°C
Overcoatable: After 8 hours at 20°C
Fully Cured: 6 days at 20°C
Cleaner / Thinner: PPG Thinner 21-06
Shelf Life: Base: 36 months, Hardener: 24 months when stored cool and dry
Packaging: Available in 4 and 20 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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