Epoxy Primer Aviation polyamide primer on the strontium chromate based coated for aluminum, MIL-C-23377.

Epoxy Primer Aviation polyamide primer on the strontium chromate based coated for aluminum, MIL-C-23377.

Epoxy Primer Aviation polyamide strontium chromate MIL-C-23377. www.denber-paints.co.il

Epoxy Primer Aviation polyamide strontium chromate MIL-C-23377. www.denber-paints.co.il

Epoxyden Primer-Aviation

MIL-PRF-23377G type I class C

Aviation epoxy two component primer paint, high solids content, anticorrosive and converts rust, strontium chromate base for iron metals and aluminum in airplanes/missiles and space shuttles/stations.


Cat. Item no. : 671009

Element of strontium chromate used as rust converter rich with zinc phosphate, particularly strong with a unique molecular structure matches the requirements of the American federal standard device, manufactured in accordance with the requirements of the contents of zinc and chromates, cadmium is prohibited and lead content max. 0.06%, tints as listed in standard strontium chromate greenish gray tint.

Paint creates a primer foundation layer with high adhesion to space aviation parts that maid of iron metals and aluminum parts treated according to the U.S. Fed. St. Also used as the mid. layer “bridges” the old paint before you recoat with a polyurethane top aliphatic aviation CARC or camouflage paints.

Paint is produced according to the American standard specifications MIL-PRF-23377G


  • Primary paint with high mechanical strength and adhesion to iron metals, galvanized steel and treated aluminum.
  • Creates a suitable preparation for top painting polyurethane aliphatic aviation and CARC paints.
  • Anticorrosive and rust converter.
  • Durable in alkaline and acids mixed with a salt and moisture environment.
  • An excellent adhesion to infrastructure.
  • Suitable also as bridge coat to old paint coat before repainting new layer of paint.
  • Easy to apply and dries quickly.
  • Ready to recoat and/or top layer coating on the same day after 12 hours.
  • High coverage.
  • Durable in jets gasoline and oils.


  • As the basis for paints interior and exterior aviation aerospace’s and airplanes.
  • For strengthening infrastructure before coating top layer and as intermediate layer.
  • Primer coat before coating iron and treated aluminum with proper top aviation coat.

Epoxy Primer Aviation polyamide primer on the strontium chromate based coated for aluminum, MIL-C-23377.

Technical data:

  • Coverage – 1 liter to 16 sqm. in a layer of 50 microns dry.
  • Flexibility – 1 mm ( sheen )
  • Density – part A 1.35-1.45 gm\cm 3, part B 85 -0.95 gm\cm 3

(ASTM D 1475)

  • Viscosity – part A + part B immediately after mixed 40 seconds cups4 #
  • Hardness – >10 Dg (Erichsen)
  • Flash point- 38 o c
  • Amount of solids part A – by weight 68%, part B – by weight 52% ( ASTM-D-2369 )
  • Erosion-120 microns-2260 cycles (Gardner) ASTM
  • Recommended layer thickness – 15-23 microns dry (minimum values)
  • Recommended layers – at least 2
  • Touch dry time – up to 5 hours.
  • Hard dry time – up to 8 hours.
  • Pot life (once- mixed A+B) – 4 hours. ( after 4 hours the blend A + B viscosity will be less than 70 seconds on # 4,  after 8 hours the mixture will not create jells)
  • Mixing ratio a: b – 2.5: 1 in volume.
  • Waiting time after mixed and before starting painting: 10 minutes and blend again with a mechanical mixer.
  • Heat tolerance durability – at 121O C, over 1 hour without any changes in the quality of the film and the hue color.
  • Hot oil durability – 121 O C 24 hours without any changes in the quality of the film and the hue color.
  • Resistant hydraulic oil – 65 O C 24 hours without any changes in the quality of the film and the hue color.
  • Solvents durability – 50 time rubbing cloth marriages in MEK with no peel off paint.
  • Distilled water durability – for 4 days in 49 O C – with no defects of film.
  • Masking tape adhesion test – pressed with barbell 2 kg for 1 hour and rip of -no flaking of paint rip of.
  • Removes paint – 90% or more in 60 minutes in paint remover.
  • Salt spray – durable >2000 hours.


  • Epoxy resin as required in standard.
  • Fillers, strontium chromate pigments.
  • Polyamid hardeners
  • Phosphate zinc.


  • Yellow greenish


  • < 5% (ASTM D 523 ) test camouflage paints in 60 0 lens

Dry to touch:

  • 12 minutes to 5 hours. (Due to the fast drying avoid over spray “dust”)

 Dry in between the layers:

  • 6-8 hours. Complete drying: 8 hours.

Application methods:

  • Roller, brush, spray gun, airless.
  • Air gun – in pressure 4 atm.
  • Airless- 0-5% dilution nozzle “0.021


  • Thinner D-4/100 . (corresponding to MIL-T-81771 Type II )
  • 10-25% according to need for roller or brush. appearance of the “orange” shell, you can increase the dosage to 35%
  • Air spray gun – 10-25% thinner D-4/100
  • Airless – 0-5% thinner  D-4/100

Surface Preparation:

  • Clean surface from dust, fat, dirt and loose paint.
  • Old coat – sand well and clean with dry air, clean with clean rag dipped in thinner.
  • Aluminum alloy/aluminum exposed or new – treatment of chemical burn and passivation according to space preparation devices: MIL-C-5541 MIL-C-81706
  • Iron metals – sand blasting cleaning up to SA- 2.5 standard (white metal)
  • Very large parts – remove paint with paint removers and flash with water, spray plastic soft granular to complete stripping and rinse thoroughly and dry.

Top color:

  • You can paint top color on primer 8-12 hours after painting. If primer was spread in appropriate conditions.
  • During cold winter you can paint after 24 hours.
  • The matching paints are all types of aviation top layer paints for aircraft and space including CARC paints.

Instructions for use:

  • Open carefully parts A and B and mix separately.
  • Pour two parts A and 1 part B to the required amount and mix well with mechanical mixer (recommended air mixer) for a uniform mixture.
  • Wait 10 minutes while adding thinner and mix again.
  • Pour to painting equipment and spray thin layer for at least 23 microns dry. If necessary if the layer is not uniform or part not painted perfectly, wait approximately 4 hours (up to 12 hours if not dry completely you will receive a shrinked layer) and spray another layer.
  • Insert into sealed and clean and dry room with temperature control for 12 hours before paint overlay.
  • Clean equipment after work.

Pot Life after mixing a blend of A+ B of 5 liters:

  • 15 O C – 10 hours
  • 20 O C – 8 hours
  • 25 O C – 6 hours
  • 30O C – 5 hours
  • 35 O C – 4 hours


  • Amount of air required for 1 liter epoxyden primer blend:
  • Or 10% of LEL = 65 M 3
  • For the TLV = 990 M 3


  • 4 + 1 = 5 liters.


  • In a cool, shaded room with proper ventilation.
  • Keep lids tightly closed.

Shelf life:

  • 12 months in the original packaging.

Cleaning tools:

  • Thinner D-4/100 as soon as finish the painting.

Quality control:

  • In factory laboratories according to specifications.
  • COA and COC certificate.
  • ISO 9001-2015

Safety precautions:

  • Inedible, keep away from the reach of children.
  • Flammable – keep distant from heated areas, fires, flames, and sparks, Prohibit smoking in working area.
  • While applying, good air ventilation is important. In case there is not enough air, use ventilation according to the ventilation table.
  • Wear protective glasses, gloves and suits.
  • Avoid direct contact of the paint and/or thinner with the eyes and skin. In case of contact, immediately wash thoroughly with water.
  • In case of an injury immediately get doctors assistance.
  • Read the safety instructions on the labels.
  • See M.S.D.S


  • Don’t mix the product with materials which were not recommended by us.
  • Don’t apply if the temperature is under +7°C.
  • Don’t apply if humidity is over 80%
  • When applying with Airless, do not aim it at anybody a direct hit could be fatal at pressures over 150 atm.
  • Read thoroughly the technical data of the product listed in this section; confirm that everything is understood completely, for clarification contacts our tech. department.
  • All information that is listed in this content is a recommendation merely and cannot be applied in the court of law.
  • The costumer must test & check that this product is compatible with his equipment and needs.
  • The information listed in this section is according to the laboratory conditions (temperature, humidity etc.) which the products were tested.
  • The recommendations listed do not hold any responsibility for this product.
  • Theoretical and actual coverage area are different concepts, the actual coverage is affected by the required thickness of the layers, required number of layers, painting conditions including the amount of paint which spread in the air before touching the surface.
  • The information listed in this section is based on experience and accumulating data, Denber inc., has the right to change the information listed at any time.
  • Paints that have been in stagnation or exposed to air more than needed could have their qualities changed.

Epoxy Primer Aviation polyamide primer on the strontium chromate based coated for aluminum, MIL-C-23377.


  • Storage room temperature 15°C to 25°C.
  • Over Spray: An effect which occurs in the spraying of paints application. A type of “dust” is created by dry gases of the air, which causing the paint particles to fall dry on the surface (hereafter the “effect”). The impact of this “effect” becomes stronger due to over pressure and heat, (most sprayers have a lever to control the   pressure) To avoid the negative impact 0f the “effect”, the pressure of the spraying should be lowered to the necessary minimum!. Another possibility is to increase the amount of the thinner in the mixture which would cause the paint particles to fall wetter on the surface.

An additional recommended possibility, to avoid this “effect”, is to add a retarder to the mixture which increases the duration period of the painting application , avoiding the paint to  dry up, and enabling it to reach the surface wetter, Thus a better painted smooth  layer is formed.

  • Pot Life: The working time which is possible to paint a mixture of two components, A+B (or more) without spoiling the qualities of the paint or disqualifying the paint as “out of use”.
  • Spray: It is possible to spray with a sprayer that has a container holding the paint that sprays it with air pressure.
  • Airless: a device with a piston which compresses the air for spraying paints. The pressure might be high (over 100atm.) Don’t aim it at anyone
  • Surface preparations: the level of cleanness is determined by international standards. Surface preparations, including cleansing sand blasting, is important & critical factor in achieving an optimal result for painting adhesion on a certain surface. These standards are equally compared to the standards of the Swiss SA, the German-Din the U.S SSPC SP For each standard in any level there are indicators, for sale, in order to make visual comparison between the cleansing of the surface and the indicator.

Quality inspection:

  • Prior to the painting on large surfaces it is important to test the product on a small area, to be sure that the paint is compatible with the level of satisfactory.
  • Laboratory testing was made according to the standards institution specifications.
  • This “Data sheet” given as noncommittal information, the product above recommended for professional painting specialists. This information is not a substitute to personal guidance.
  • You must read the MSDS safety instructions before you start working with the product.

Epoxy Primer Aviation polyamide primer on the strontium chromate based coated for aluminum, MIL-C-23377.