Series 394


Generic Type

Aromatic Polyurethane, Mio-Zinc Filled Primer

Common Usage

Specially formulated, one-component, moisture-cured, micaceous iron oxide and zinc filled primer that offers superior bonding to marginally prepared rusty steel and tightly adhered old coatings. This high performance primer is ideal for corrosion resistance with a triple barrier mechanism of zinc, mio and urethane resin built into the dry film. It is suitable as a corrosion resistant primer under certain fireproofing systems. Contact your Tnemec representative for specific information.

View more product details

Volume Solids

61.0 ± 2.0% (mixed)

Theoretical Coverage

978 mil sq ft/gal (24.0 m²/L at 25 microns). See APPLICATION for coverage rates.


Series 27, 27WB, 66, 66HS, L69, L69F, N69, N69F, 73, 113, 114, 115, 161, 161HS, 740, 750, 1026, 1028, 1029, 1074, 1074U, 1075, 1075U.
Note: If Series 394 is exterior exposed for 1 year or more it must be scarified or recoated with itself before topcoating. Scarification or recoating with itself is required if the Series 394 has been exterior exposed for 3 days or longer and Series 113 is the specified topcoat. Note: Series 115 requires the use of Series 44-900 adhesion promoter when topcoating Series 394. Note: Certain topcoat colors may not provide one coat hiding depending on method of application. Contact your Tnemec representative. Note: Series 394 must be exterior exposed for one day prior to topcoating with 27WB or three days prior to topcoating with 1028 or 1029.

Curing Time

Without 44-710

| Temperature †|| To Touch || To Handle || To Topcoat |
| 75°F (24°C) || 1/4 hour || 1 1/2 hours || 16 hours |
| 65°F (18°C) || 1/4 hour || 2 3/4 hours || 16 hours |
| 55°F (13°C) || 1/4 hour || 5 hours || 20 hours |
---† 50% Relative Humidity. Curing time will vary with surface temperature, humidity and film thickness.
Note: When recoating Series 394 with itself, the minimum recoat time is 2 hours at 70°F (21°C).

With 44-710: The use of 44-710 can greatly reduce dry to handle cure times. Note: 44-710 Accelerator must be used when the surface temperature falls below 50°F (10°C).


Unthinned: 0.75 lbs/gal solids
Thinned 10% (No. 49 Thinner): 0.75 lbs/gal solids


Self-priming, 90-97, 90G-1K97

Recommended DFT

2.5 to 3.5 mils (65 to 90 microns) per coat.

Number of Components


Volatile Organic Compounds

Unthinned: 2.05 lbs/gallon (246 grams/litre)
Thinned 10% (No. 49 Thinner): 2.05 lbs/gallon (246 grams/litre)

Still have questions? Request the information you’re looking for:

Request Info

How to Purchase

Tnemec coatings are sold through a select network of local independent sales representatives who can help you find the best product for your needs. Find a rep

Continue Exploring in the color tool


Color Swatch packet

When you finish selecting, request your Swatch Packet below. Expect your swatch cards in 5-7 business days. Contact your expert Sales Rep at any time.

Sorry, there is a maximum of 6 color swatches.

Request swatch packet

Continue Exploring in the color tool