Series 391

Tank Armor

Generic Type

Polyamine Epoxy

Common Usage

An internal epoxy lining formulated for aggressive chemical immersion and corrosion control of chemical tanks. Contains micro-fiber reinforcement for improved film integrity. Series 391 exhibits superior resistance to a wide range of chemicals, acids, and fractionation blends with excellent physical properties for long-term durability and the service life of transport and storage tanks. Contact Tnemec for more information.

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Recommended DFT

20.0 to 40.0 mils (500 to 1,015 microns), one coat with multiple passes.
Note: Series 391 can be applied to an optional high build thickness of 50 mils (1270 microns) in a single coat to meet specific industry requirements.

Volatile Organic Compounds

Unthinned: 0.09 lbs/gallon (10 grams/litre)

Curing Time

Temperature To Handle Max. Recoat Immersion
75°F (24°C) 8 hours 24 hours 5 days

Note: If more than 24 hours have elapsed between coats, the Series 391 coated surface must be mechanically abraded before topcoating. Note: For high temperature service (>90°F, 35°C) consult your Tnemec representative or Tnemec Technical Services. Curing time will vary with surface temperature, air movement, humidity and film thickness.

Theoretical Coverage

1,604 mil sq ft/gal (39.4 m²/L at 25 microns). See APPLICATION for coverage rates.

Volume Solids

100% (mixed)

Number of Components

Two: Three Part A (epoxy) to One Part B (amine)


Unthinned: 0.00 lbs/gal solids


Note: Series 61 can be used as a primer under Series 391 depending on service conditions. Contact Tnemec Technical Service for recommendations.

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