Transtar 2:1 Primer Grey (TS4603)
2 in 1 Primers are a specialty coating designed for easy and convenient priming
of metal and plastic parts. These primers help prevent rust and seal out moisture,
while providing a smooth base for topcoat application on metal substrates. They
have excellent flexibility and adhesion properties that enable them to be applied to
flexible and rigid parts.
Ready to use.
• Raw plastic – rigid (SMC, BMC) • Bare steel • 1K primer
• Raw plastic – flex (ABD, PPO) • Bare galvanized • 2K primer
• Raw plastic – soft (PUR) • Bare aluminum • Self etch primer
• Plastic part- primed • OEM E-coat • Body filler
• OEM finish & old paint work – non-reversible
Note: Aftermarket E-coat must be solvent tested with Transtar Urethane Grade Reducers 6700 or 6700-F
Series in an inconspicuous spot before application of new coating.
Note: Due to the diverse nature of plastics, always test plastic substrate for acceptable adhesion. Adhesion
promoter maybe required for proper adhesion.
Note: Test pre‐primed panels with acetone or paint thinner. If coating fails, strip panel to bare plastic & follow
SOP 251 for Raw Plastic.
Surface Prep & Application
Clean surface with SCAT 6311, Speedi SCAT 6321 or Aqua SCAT 2 1391/1394 and
wipe completely dry. Sand substrate with 240 grit paper and mask off repair area.
Shake can well. Hold can upright 8 – 12 inches from surface to be primed. Apply 2 – 3
medium wet coats, allowing 5-10 minutes of flash time between coats. Allow to dry
for 15 – 20 minutes before sanding. Sand with 320-400 (dry) or 500-600 (wet) grit
sandpaper until a smooth surface is attained. Re-clean with SCAT, wipe area with a
tack cloth and apply top coat paint per manufacturers instructions.
Flash Times/Dry Times
Flash time …………………….5 – 10 min
Dry to sand……………………15 – 20 min