National Supply Company 777 DTM 2K Primer Urethane Primer Instructions

: August 31, 2024
: National Supply Company

Table of Contents

777 DTM 2K Primer Urethane Primer
Specifications
Product Usage Instructions
1. Surface Preparation
2. Substrates
3. Gun Set Up
4. Application
5. Flash/Dry Times
6. Clean Up
- FAQ
Q: Can this primer be applied directly to bare metal?
Q: How long should I wait before applying a topcoat?
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

777 DTM 2K Primer Urethane Primer

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Specifications

Product Name: 777 DTM 2K Primer
Components: DTM Primer Filler/Surfacer/Sealer, Medium Hardener,
Fast Hardener, LAUCO Reducer
Mixing Ratio: Primer Surfacer – 4:1:1 (by volume)

Product Usage Instructions

1. Surface Preparation

Ensure the surface is clean, dry, and free of any contaminants
before application.

2. Substrates

The primer can be applied to various substrates including metal,
aluminum, and fiberglass. Ensure proper surface preparation based
on the substrate.

3. Gun Set Up

Conventional Gun:

Primer Nozzle: 1.5-1.9 mm
Filler/Surfacer Nozzle: 1.3-1.5 mm
Air Cap: 1.5-1.9 mm
Inlet Air Pressure: 30-45 psi (2.0-3.1
bar)

HVLP Gun:

Primer Nozzle: 1.5-1.9 mm
Filler/Surfacer Nozzle: 1.3-1.5 mm
Air Cap: 1.5-1.9 mm
Inlet Air Pressure: 20-30 psi (1.5-2.0
bar)

Note: Refer to the spray gun manufacturer’s information for
specific details.

4. Application

Apply the primer filler/surfacer/sealer using the recommended
mixing ratio of 4:1:1 (by volume). Ensure thorough mixing before
application.

5. Flash/Dry Times

Refer to the provided table for flash and dry times based on the
specific application (filler, surfacer, sealer) and environmental
conditions.

6. Clean Up

Clean up equipment using appropriate solvents based on the
product used.

FAQ

Q: Can this primer be applied directly to bare metal?

A: Yes, this primer is formulated for direct application to
metal surfaces after proper surface preparation.

Q: How long should I wait before applying a topcoat?

A: The recommended wait times are provided in the flash/dry
times table based on the specific application.

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ALL IN ONE

777 DTM 2K PRIMER

GENERAL INFORMATION
777 All in One Direct to Metal Primer Filler/surfacer/sealer is formulated to provide the ultimate in performance, productivity, versatility, adhesion, durability,
moisture and corrosion resistance, and superior sanding and sealing characteristics.

1. COMPONENTS

· 777

DTM Primer Filler/Surfacer/Sealer

· 772

Medium Hardener

· 773

Fast Hardener

LAUCO Reducer

2. MIXING RATIO
PRIMER FILLER – 4:1 (by volume) · Mix four (4) parts 777 ALL IN ONE (1) part 772 Medium or 773 Fast Hardener.
PRIMER SURFACER – 4:1:1 (by volume) · Mix four (4) parts 777 ALL IN ONE (1) part 772 Medium or 773 Fast Hardener and reduced with one (1) part reducers.
PRIMER SEALER – 4:1:2 (by volume) · Mix four (4) parts 777 ALL IN ONE (1) part 772 Medium or 773 Fast Hardener and reduced with two (2) parts reducers.

7. APPLICATION
PRIMER FILLER – 4:1 (by volume) · Spray one (1) to three (3) medium wet coats · Allow 10-15 minutes between or until surface has dulled to a matte
finish · Recommended Dry Film Thickness 1.0-4.0 mils (25-100 µm)
PRIMER SURFACER – 4:1:1 (by volume)
· Spray one (1) to three (3) medium wet coats · Allow 10-15 minutes between or until surface has dulled to a matte
finish · Recommended Dry Film Thickness 1.0-4.0 mils (25-100 µm)
PRIMER SEALER – 4:1:2 (by volume) · Spray one (1) medium coat · Recommended Dry Film Thickness 0.6-1.0 mils (15-25 µm)
NOTE: · Surface temperature should be 50-100°F (10-38°C) with less than 80%
humidity preferred · If sealer is allowed to dry more than 12 hours before topcoating, sealer
must be re-sanded

8. FLASH / DRY TIMES

3. POT LIFE @ 77°F (25°C)
· 45-60 Minutes
4. CLEAN UP
· Use a quality reducer (check local regulations)

AIR DRY @ 68°F (20°C)
Flash Time To Sand

FILLER 5-10 Minutes 90-120 Minutes

To Topcoat

30 Minutes

To Topcoat Without Sanding N/A

SURFACER 5-10 Minutes 90-120 Minutes
30 Minutes N/A

SEALER
5-10 Minutes 20 Minutes (Non Sanding) 20-30 Minutes 8 Hours Max

5. SURFACE PREPARATION
· Wipe surface and wipe dry with clean cloth before product flashes.
· Sand and featheredge substrate with P320 grit sandpaper or equivalent · Clean surface and wipe dry with clean cloth before product flashes.
6. SUBSTRATES
· Properly cleaned and sanded aluminum, steel, galvanized steel or sand blasted steel
· Properly cleaned and sanded fiberglass. NOTE: Do not apply over Self Etching Primers

9. GUN SET UP

CONVENTIONAL GUN

PRIMER
FILLER / SURFACER

PRIMER SEALER

Nozzle

1.5-1.9 mm

1.3-1.5 mm

Air Cap

1.5-1.9 mm

1.3-1.5 mm

Inlet Air Pressure

30-45 psi (2.0-3.1 bar)