Selemix Polyurethane Primer 2-705


Selemix Polyurethane Primer 2-705 a Fast Drying and Handling, High Build two pack Anticorrosion Polyurethane Primer.

Recommended Primer for Aluminium, Steel, Galvanized Steel and Light Alloys.

Selemix Polyurethane Primer 2-705 is designed to provide excellent adhesion and protection on different substrates such as aluminium, bare steel, galvanized steel and light alloys.

Selemix Polyurethane Primer is recommended as a primer in C5-M environments when overcoated with Selemix Acrylics and Polyurethanes.  It is fast drying, dust free in 20 minutes and can be handled and  overcoated in 2 hours.

Polyurethane Primer is available in a matt finish in black, white, red and grey. Base Colour, Polyurethane Hardener 9-060 and Acrylic Thinner 1-430 should be purchased separately.

The mix ratio is 5 parts base, to 1 part hardener and up to 0.5 parts thinner by volume.


Selemix Polyurethane Primer is a fast drying two pack primer with excellent adhesion and anticorrosion properties which can be applied wet on wet, reducing labour costs and production downtime. It can be applied on a range of substrates and when used with Selemix Polyurethane or Acrylic topcoats it forms part of a system suitable for aggressive C5-M low environments.

It is available in four stock colours and can be applied by Airless spray or Conventional spray on a variety of substrates including steel, galvanised steel, light alloys and GRP.

Selemix Polyurethane Primer is ideal as a primer for Selemix Polyurethane and Acrylic topcoats when excellent chemical and weather resistance is required.

Selemix Polyurethane Primer is a two pack sandable primer for corrosion protection in aggressive C5-M  environments for Agricultural & Construction Equipment, Commercial Transport, Earthmoving and Stonecrusher Equipment, Cranes and Steel Fabrications.

It can be applied up to 50 microns dry film thickness in a single coat by airless spray or conventional spray equipment. Selemix Polyurethane Primer can be applied wet on wet allowing up to 10 mins flash off between coats.

For ultra smooth finishing It can be flatted after 45 minutes force drying or after 6hrs at 20c and can be overcoated with Selemix topcoats after 2hrs.

Polyurethane Base Colour 2.705, Polyurethane Hardener 9-60 and Acrylic Thinner 1-430 should be purchased separately and mixed in a ratio of 5 parts base, 1 part hardener and up to 0.5 part thinner.

Surface Preparation

Carbon Steel: Minimum St2 (ISO 8501-1). Abrade with  P80-120 (dry)

Galvanised steel: Surface to be clean and dry abrade with Scotch Brite

Aluminium, GRP: Surface to be clean and dry, abrade with P240-320 (dry)

Technical Data

Download Datasheet Download Datasheet

Volume Solids (ISO 3223): 42% Ready for use.
VOC Content: 410 g/lt
Flash point (ISO 3679): 34c
Dry Film thickness: 50 microns
Wet Film thickness: 120 microns
Theoretical coverage: 5 sq m/lt
Mix Ratio: 5:1 (Hardener 9-060 or Hardener 9-070)
Pot Life 20c: 3hrs
Touch Dry 20c: 20mins
Overcoat 20c: Allow 10 mins between coats. Overcoat with Selemix topcoats after 2hrs. Flatting if required after 6hrs.
Nozzle tip: 13-15 thou Airless, 1.6-1.8 mm conventional
Pressure at nozzle: 2000psi Airless, 50psi Conventional
Thinner: No. 1-430, for large areas use slow 1-208
Technical: See Selemix full TDS for further information on mixing and application

H&S: Observe the precautionary information on the container. Refer to MSDS for full health and safety details and storage regulations.


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