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Versatile, high solids 2-pack PU with 80% gloss finish for direct application to a variety of substrates without need for a primer.
- Suitable for use on Steel, Cast Iron, Aluminium, Light Alloys and GRP
- Excellent anticorrosive properties
- Available in 10%, 30%, 50%, 70% and 80% Gloss Levels (click to view product)
- Available in over 6,700+ RAL, RAL Metallic*, BS, NCS and Selemix TIC colours
- *Note: RAL Pearl colours shown are approximations only - matches will not be exact
- Product can be purchased as a Two Component Pack, or as Base or Hardener only
- Also available in Standard and Economy versions
- Please Note: Gloss levels are within +/- 10% depending on colour
Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.
Should you require training, visit - https://www.safeusediisocyanates.eu/
Product customisation
Don't forget to save your customization to be able to add to cartDescription
Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.
Should you require training, visit - https://www.safeusediisocyanates.eu/
Selemix 7-538/7-539 2K Polyurethane Direct Topcoat HS is a versatile, high solids 2-pack PU finish, available in five gloss levels, which can be applied directly to a variety of substrates without need for a primer, giving a very efficient process.
It offers excellent anticorrosive properties making it suitable for the finishing and protection of machinery, agricultural and construction equipment, and many other industrial painting applications.
Thanks to its ISO 12944-6 and MED Certification, Polyurethane Direct Topcoat HS is a true all-rounder for many paint jobs in the light industry.
Selemix 7-538/7-539 Polyurethane Direct Topcoat delivers a high performance single layer system, characterised by ease of application, high film thickness, very good adhesion on various substrates such as bare steel, aluminium, galvanised steel and fibre reinforced plastic.
Available in 10%, 30%, 50%, 70% and 80%* Gloss Levels (click to view product) in over 6,700+ RAL, RAL Metallic, BS, NCS and Selemix TIC colours.
*Please note: 80% Gloss product is not suitable for application by brush or roller, or for use on previously painted surfaces. Please see the 10%-70% gloss level products for these uses.
Also available in Standard and Economy versions.
For Professional Use Only.
Quick Links - Click To Jump To Section:
- Features & Benefits
- Product Codes Explained
- Surface Preparation
- Mixing
- Application Notes
- Theoretical Coverage
- Drying Times
- Health & Safety
Features & Benefits
- Versatile, high solids 2-pack PU finish
- Available in 10%, 30%, 50%, 70% and 80% Gloss Levels (click to view product)
- Available in over 6,700+ RAL, RAL Metallic*, BS, NCS and Selemix TIC colours
- *Note: RAL Pearl colours shown are approximations only - matches will not be exact
- Can be applied directly to a variety of substrates without need for a primer
- Excellent anticorrosive properties
- Suitable for application by a wide range of methods including conventional spray, HVLP spray, airless spray or air-assisted airless spray
- Suitable for use on Steel, Cast Iron, Aluminium, Light Alloys and GRP
- Product can be purchased as a Two Component Pack, or as Base or Hardener only - please see the drop down menu
- Also available in Standard and Economy versions
Product Codes Explained
The base component of Selemix 7-538/7-539 2K Polyurethane Direct Topcoat HS 80% Gloss is seperated into two product codes which are used to identify white and pastel colours from the mixed colours as below:
- 7-538 - Selemix 2K Polyurethane Direct Topcoat 80% Gloss Base/Binder - Mixed Colours
- 7-539 - Selemix 2K Polyurethane Direct Topcoat 80% Gloss Base/Binder - White & Pastel Colours
- 9-075 - HS Hardener for Polyurethane Direct
This is for colour tinting only, the features of the product are the same.
Please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details.
Surface Preparation
Apply only on a clean and dry surface with a temperature above the dew point to avoid condensation. In confined spaces, provide adequate ventilation during application and drying.
Steel (Blast Cleaned):
- Blast clean to ISO 8501-1 SA 2.5 with a blast profile of maximum 40 µm Rz
Steel / Cast Iron:
- Machine sand with P80-120 discs and degrease
Galvanised Steel and Phosphated Steel:
- Abrade with SCOTCHBRITE® and degrease
Aluminium / Light Alloys:
- Machine sand with P240-320 discs and degrease
GRP:
- Machine sand with P240 discs and degrease
Mixing
- Thoroughly mix paint before activating and check colour before use
- The speed of drying can be increased with use of 1-490 Thinner, or 6-550 Accelerator (added at 1-2%) but these can reduce the final gloss and shorten the pot life
- Use of 1-490 Thinner AND 6-550 together is not recommended
- Use of 1-490 Thinner or 6-550 when applied directly to aluminium is not advised
Mixing Ratio:
- Selemix 7-538/7-539 2K Polyurethane Direct Topcoat HS
- 6 parts base : 1 part hardener
Please Note: Refer to the Product Data Sheet for detailed information regarding mixing ratios for the relevant binder/base and hardener/activator used.
Mixing ratios between the Standard, High Solids and Economy versions of this product vary due to the different hardeners used.
Application Notes
| Features | Conventional Spray | Airless Spray |
|---|---|---|
| Spraygun Setup: |
Nozzle: Gravity: 1.8mm Suction: 1.8-2.0mm Pressure feed:1.2-1.4mm |
Nozzle: 7-538/7-539: 11-13 thou 0.28-0.33mm |
| Air Pressure: |
HVLP: 2 Bar Standard: 2-3 Bar |
2-3 Bar |
| Fluid Pressure: | N/A | 100 Bar |
| Number of coats: | 2 | 1-2 |
| Flash-off between coats: | 15-20 mins | 15-20mins |
| Drying: | Air dry or bake at 60°C for 45 mins | Air dry or bake at 60°C for 45 mins |
| Flash-off before bake: | 5-10 mins | 5-10 mins |
| Wet Film Thickness: | 160-200 microns | 160-200 microns |
| Dry Film Thickness: | 80-100 microns | 80-100 microns |
Please see the Product Data Sheet for detailed Application Instructions before use.
Theoretical Coverage
Theoretical coverage at 100 microns DFT:
- Conventional Spray - 4.1-4.2 m²/L
- Air Assisted Airless Spray - 4.9-5.0 m²/L
Note: Please see the Product Data Sheet for detailed information.
Drying Times
| Drying Times 20°C | |
|---|---|
| Dust Free | 60 mins |
| Touch Free | 1.5-2 hours |
| Tape Free | 24 hours |
| Hard Dry | 24 Hours |
| Stoving | 45 minutes at 60°C (according to film thickness) |
| Overcoating time |
Minimum: when Hard Dry Maximum: 5 months by itself without sanding If 6-550 Accelerator or 1-490 Thinner are used, product can be recoated with itself up to 24 hours without sanding |
| Please Note: Lower temperature or film thickness higher than 100µm will extend drying times | |
Health & Safety
- For comprehensive Health, Safety and Environmental advice, please refer to the relevant Material Safety Data Sheets and product can labels
- THIS PRODUCT IS FOR PROFESSIONAL USE ONLY
Product Details
8720-928538
Data sheet
- Manufacturer
- Selemix
- For Use By
- Professional Use
- Water / Solvent Based
- Solvent Based
- For Use On
- Steel
Cast Iron
Aluminium
Light Alloys
GRP - Sheen
- 80 GU Gloss
- Single, Two or Three Pack
- Two-Pack
- Mixing Ratio
- 6 to 1
- Application
- Spray
Airless Spray
Air Assisted Airless Spray - Touch Dry (at 20°C)
- 2 hours
- Pot Life (at 20°C)
- 2-3 Hours (1-2 Hours with 1-490 Thinner)
- Recommended Dry Film Thickness
- 80-100 microns
- Recommended Wet Film Thickness
- 160-200 microns
- UN Number (Activator)
- UN1263
- UN Number (Base)
- UN1263
- Hard Dry
- 24 Hours
- Dust Dry (at 20°C)
- 60 Mins
- Colour(s)
- Fully Tintable
- Base Type
- Solvent-Based
- Suitable For Use On
- GRP
- Suitable For Use On
- Aluminium
- Suitable For Use On
- Steel
- Suitable For Use On
- Cast Iron
- Suitable For Use On
- Light Alloys
- Suitable For Use On
- Galvanised Steel
- Finish
- High Gloss
- Substrate
- Steel
- Substrate
- Galvanised Steel
- Substrate
- Blasted Steel
- Substrate
- Aluminium
- Substrate
- Painted / Primed Metal
- Substrate
- GRP
- Substrate
- Cast Iron
- Substrate
- Light Alloys
- Substrate
- Phosphated Steel
- Usages
- Force Dry Compatible
- Usages
- Stoving Compatible
- Usages
- Direct to Metal
- Usages
- High Corrosion Resistance
- Usages
- High Solids
- Usages
- Process Efficiency
- Usages
- Atmospheric
- Usages
- Anti-Corrosive
- Product Usage Type
- Topcoat
- Technologies
- Solventborne
- Technologies
- 2K
- Application Methods
- Conventional
- Application Methods
- Airmix
- Application Methods
- Electrostatic
- Product Type
- Polyurethane
- Environment
- Atmospheric
- Touch Dry/Dust Free (@ 20-25°C)
- 2 hours
- Drying Properties
- Force Dry Compatible
- Drying Properties
- Stoving Compatible
- Product Attributes
- High Solids
- Product Attributes
- Anti-Corrosive
Questions
Question about the product
Adriana Martínez
on
2022-10-12 18:03:55
| Question:
¿Does 7-538 2K POLYURETHANE DIRECT TOPCOAT 80 GU has LEAD? Thanks in advance. |
Answer from Rawlins’ Technical Team:
Please see the Safety Data Sheet for information on all chemicals within this paint. This can be found on product page in the data sheet tab, this product does not contain lead. | |
IMPORTANT SHIPPING & DELIVERY INFORMATION
Selemix 7-538/7-539 2K Polyurethane Direct Topcoat HS (80 GU) is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
*All estimates are based on theoretical consumption rates for a single coat and do not take into account any substrate deviations or wastage