Series 90-97


Generic Type

Aromatic Urethane, Zinc-Rich

Common Usage

An advanced technology, two-component, moisture-cured, zinc-rich primer providing extraordinary performance. It’s user friendly and rapid curing so chemical- and corrosion-resistant topcoats can be applied the “same-day.” Also used for field touch-up of inorganic zinc coating. Application methods include “dry-fall” under certain conditions (see Application).

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  • Reddish-Gray

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Number of Components

Two: Part A and Part B

Volume Solids

63.0 ± 2.0% (mixed)

Recommended DFT

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

Theoretical Coverage

1,011 mil sq ft/gal (24.8 m²/L at 25 microns). See APPLICATION for coverage rates.


Series 1, 6, 27, 27WB, 46H-413, 66, L69, L69F, N69, N69F, V69, V69F, 73, 104, 113, 114, 115, 135, 161, 394, 1028, 1029, 1074, 1074U, 1075, 1075U
Note: Certain topcoat colors may not provide one-coat hiding depending on method of application. Contact your Tnemec representative. Note: Series 90-97 must be exterior exposed for three days prior to topcoating with Series 1028 or 1029. Note: Series 90-97 must be exterior exposed for one day prior to topcoating with Series 27WB.


Unthinned: 5.12 lbs/gal solids
Thinned 2.5%: 5.41 lbs/gal solids (No. 2 Thinner); 5.13 lbs/gal solids (No. 3 Thinner)
Thinned 10%: 6.27 lbs/gal solids (No. 2 Thinner); 5.16 lbs/gal solids (No. 3 Thinner)

Curing Time

Without 44-710

|Temperature †||To Handle||To Recoat|
|75°F (24°C)||1 hour||4 hours|
|65°F (18°C)||1 1/2 hours||5 hours|
|55°F (13°C)||2 hours||6 hours|
|45°F (7°C)||2 1/2 hours||7 hours|
|35°F (2°C)||3 hours||8 hours|
---† 50% relative humidity. Curing time will vary with surface temperature, humidity and film thickness.
Note: For faster curing, low humidity and low-temperature applications, add No. 44-710 Urethane Accelerator (see separate product data sheet).

Volatile Organic Compounds

Unthinned: 2.68 lbs/gallon (321 grams/litre)
Thinned 2.5% (No. 2 or No. 3 Thinner): 2.79 lbs/gallon (334 grams/litre)
Thinned 10% (No. 2 or No. 3 Thinner): 3.10 lbs/gallon (371 grams/litre)

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