Note: Please consult the technical data sheets for correct product usage and procedures.
Den Braven can not be held liable for products incorrectly used.


Primer-250 is a polyurethane and solvent based adhesion promotor and reinforcer of porous surfaces for the application of polyurethane sealants. Primer-250 is used to reinforce dusty and porous substrates and to improve the adhesion of polyurethane sealants to most substrates.


Primer-250 can be used as an adhesion promotor and reinforcer of porous ssubstrates like masonry, natural stone and concrete, metals, glass, aluminium and many plastics.

Surface Preparations and Finishing

Before using the Primer-250 refer to the Health & Safety Sheet. All surfaces must be clean, dry and free from dust, grease and other loose material. Thoroughly cleaning by using a Cleaner and two cloth. Contact Den Braven for a proper recommendation. Clean brush immediately with MEK Cleaner. Clean hands with Handclean. Saturate porous substrates and apply only a thin film on non porous substrates.


Surfaces, material and tools can be cleaned by using Cleaner (PDS 7.82).


Yellow Clear


Bottle 1000 ml

Shelf Life

12 months in original unopened packaging at temperatures between +5°C and +25°C.