Hardner for durable lacquer paint for wood, glass, plastic and metal - 250 ml

Besa Urki hardener B-comp. E225 250 ML


In stock

Is the hardener for the 2-component durable, good covering and slightly elastic PUR varnish for finishing wood, glass, plastic, metal and non-ferrous metals. Very resistant to sun, water, chemicals and diluted acids and lyes. Retains its (satin) gloss and is UV-resistant.  Has a M1 fire retardant effect according to UNE 23727-90 and is F1 classified according to NF- F-16101. The hardener is available separately in 250 ml, 1 lt, 2.5 lt and 5 lt packages.  A hardener is supplied as standard with the small packages.

€23.05 / st


As a finishing coat for various applications to boat, construction and model making. Can be applied by brush, roller or spray gun. When spraying, however, one should dilute by 10-20% with Urkisol 8229.


  • Always ensure a dry and grease-free surface. 
  • Never use in the full sun. 
  • Mix the individual components well before use. 
  •  Mix both components in a 2/1 (urki voc) or 3/1 (urki-nato) volume ratio, depending on the type of varnish. 
  • Let this mixture rest for about 15 minutes and then process it within 5 hours. 
  • Waiting time between layers 3-4 hours. 
  • Dust dry after 30 minutes, tack free after 3-4 hours. 
  • As extra adhesive layer for porous substrates you can use primer G4, for aluminium or stainless steel substrates you can use epoxy light primer. 
  • Spray pressure: 2,5-4 bar with an opening of 1,5-1,8 mm.

Attention: too much humidity can cause air bubbles to form on the surface. Never use the hardener alone, but always in combination with the lacquer.

Always provide appropriate protective clothing and gloves. Avoid prolonged skin contact.
The use of a carbon filter mask type A2 is recommended. Cleaning agent for tools: cleaner M (environmentally friendly substitute for acetone).

Technical specifications

Download technical fiche