Hempel Underwater Primer, grey

Hempel Underwater Primer is a fast drying underwater primer containing aluminium flakes. It can be used as a sealer over old antifouling or as an adhesion primer over epoxy primed surfaces before applying antifouling.

Recommended use:

Can be used on fiberglass, wood and steel surfaces. Suitable for use in all areas below the waterline including keels.

Product safety:

Flash point: 35°C [95°F]

VOC content: 479 g/L [4.00 lb/US gal]

Handling:

Handle with care. Read all warnings on packaging and paint containers before use.

Follow local and national regulations. Always refer to the Hempel Material Safety Data Sheet for more detailed product information in addition to the product data sheet.

Product information:

Product code: 26031

Standard shade/code: Aluminum gray 19000

Dry matter content: 39 ± 2%

Specific gravity: 1.2 kg/L [10 lb/US gal]

Purity:

Remove oil, grease and other contaminants with a suitable detergent.

Clean with Hempel Pre-Clean.

New building:

Unpainted surface: Sand the surface and remove dust.

New wood: Impregnate a dry and clean surface with a suitable wood impregnation agent and let dry.

Steel: Remove salt and other contaminants by cleaning with (high pressure) fresh water. Remove all rust and loose material by blast cleaning or wire brushing. Remove dust.

Maintenance and repair:

Previously treated surface: Sand, clean and dry the surface.

Spot paint and sand to achieve a uniform surface profile. For further information, see Hempel's separate Surface Preparation Instructions publication.

Diffusion:

Thinner: Hempel Thinner 811

Cleaning agent: Hempel Thinner 811

Application method:

Roller: 20%

Brush: 20%

Painting pad: 20%

Airless sprayer: 20%

Nozzle pressure: 200 bar [2900 psi]

Recommended nozzle: 0.018-0.021'

Keep thinning to a minimum. The product can be applied by spray. Contact Hempel for further information. Spraying data is for guidance only and is subject to change. Pressure is given at a material temperature of 20 °C [68 °F].

Film thickness:

Specification range: Low, High, Recommended

Film thickness, dry: 50 microns [2.0 mils]

Film thickness, wet: 130 microns [5.1 mils]

Theoretical coverage: 7.8 m²/L [320 sq ft/US gal]

Avoid using a film that is too thick to ensure best performance.

Painting conditions:

Apply only to a dry, clean surface that is at least 3°C ??[5°F] above the dew point to avoid condensation.

The relative humidity must be below 85% during drying and curing.

Notes:

Mix well before use.

Safety data sheet: