Thermal Spray Sealers

Sealers are commonly used to seal the porosity of thermal spray coatings, both engineering and anti-corrosion coatings.  As a generalisation, a lot of corrosion coatings (like zinc or aluminium) are just sealed with commonly available paints or paint-based sealers.

Engineering coatings and high-performance corrosion coatings are often sealed with higher performing, deep penetrating sealers. In many cases, these sealers have been difficult to apply or cure or have short shelf life.

Full details of the sealer product range can be found in our sealer brochures but a general overview is provided below.

SPRAYSEAL-F: This is the most commonly applied, general use sealer in our range. It is easily applied by spray, brush or roller and is suitable for pore sizes from 0-0.1mm. Temperature resistant between -40/300ºC continuous, this sealer is touch dry in 6 minutes, machinable in 90 minutes and fully cured in 36 hours. We supply in 500ml aerosol, 1 litre and 5 litre tins.

SPRAYSEAL-C: A similar formulation to SPRAYSEAL-F but suitable for large pores from 0.1-0.5mm, e.g. coatings with a more open structure. Application methods and temperature resistance are the same as SPRAYSEAL-F but this sealer is touch dry in 8 minutes, machinable in 2 hours and fully cured in 48 hours. We supply in 500ml aerosol, 1 litre and 5 litre tins.

SPRAYSEAL-HT: For greater temperature resistance, we offer SPRAYSEAL-HT.  Applied by spray, brush or roller, it is suitable for pore sizes 0-0.1mm. Temperature resistant between -40/500ºC continuous. This sealer does not air dry but requires curing within one hour of application at 250ºC for 3 hours. We supply in 1 litre and 5 litre tins.

SPRAYSEAL-E: For maximum corrosion and solvent resistance, we offer the 2-pack Epoxy SPRAYSEAL-E. Applied by spray, brush or roller and is suitable for pore sizes from 0-0.5mm. Temperature resistant between -40/200ºC continuous, this sealer is touch dry in 20 hours, machinable in 36 hours and fully cured in 192 hours. We supply in 1 litre tins with a 100ml hardener. Note: drying and curing times reduce with higher temperatures. Quoted times are based on 20ºC environment.