Series N140

Pota-Pox Plus

Generic Type

Polyamidoamine Epoxy

Common Usage

Innovative potable water coating which offers high-build edge protection and allows for application at a wide range of temperatures (down to 35°F or 2°C with 44-700 Accelerator). For use on the interior and exterior of steel or concrete tanks, reservoirs, pipes, valves, pumps, and equipment in potable water service.

Special Qualifications

Certified by NSF International in accordance with NSF/ANSI/CAN Std. 61 and the extraction requirements of NSF/ANSI/CAN 600. Note: Series N140 is an NSF-approved primer, stripe coat, and intermediate coat for applications on the interior of steel tanks; Series N140 is an NSF-approved primer and finish coat for applications on pumps, valves, fittings, and mechanical devices. Reference Tnemec’s certified product listing at for additional details.

Conforms to AWWA C210 (without 44-700). Contact your Tnemec representative for systems and additional information.

A two-coat and three-coat system of Series N140 meets the requirements of AWWA C550 Protective Interior Coatings for Valves and Hydrants.

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Volatile Organic Compounds

Unthinned: 2.4 lbs/gallon (285 grams/litre)
Thinned 5% (No. 60 Thinner): 2.6 lbs/gallon (311 grams/litre)
Thinned 10% (No. 4 Thinner): 2.8 lbs/gallon (334 grams/litre) †


Interior: Series 21, 22, FC22, L140, L140F, N140, N140F, 264, 265, 406.
Exterior: Series 22, 27, 66, L69, L69F, N69, N69F, V69, V69F, 73, 118, L140, L140F, N140, N140F, 156, 157, 161, 180, 181, 700, V700, 701, V701, 1026, 1028, 1029, 1077, 1078, 1078V, 1080, 1081, 1094, 1095, 1096, 1224. Note: When topcoating with Series 700, V700, 701, or V701, an intermediate coat of Series 73, 1095 or 1096 is required. Note: The following recoat times apply for Series N140: Immersion Service—Surface must be scarified by blasting with fine abrasive after 60 days. Atmospheric Service—After 60 days, scarification or an epoxy tie-coat is required. Note: When topcoating with Series 406, recoat times will vary with temperature. Reference the Series 406 product data sheet for specific recoat times. Contact your Tnemec representative for specific recommendations.

Recommended DFT

2.0 to 10.0 mils (50 to 225 microns) per coat. Note: Reference the NSF website at for details on the maximum allowable DFT. Note: The number of coats and thickness requirements will vary with substrate, application method and exposure. Contact your Tnemec representative.


Series 215, 217, 218

Volume Solids

67.0 ± 2.0% (mixed—A, B & 44-700 Epoxy Accelerator) †


Self-priming, Series 22, 91-H₂O, 94-H₂O, 98-H₂O, L140, L140F, N140F


Unthinned: 2.4 lbs/gal solids
Thinned 5% (No. 60 Thinner): 2.4 lbs/gal solids
Thinned 10% (No. 4 Thinner): 3.3 lbs/gal solids

Number of Components

Two: Part A (amine) and Part B (epoxy) — One (Part A) to one (Part B) by volume.

Theoretical Coverage

1,070 mil sq ft/gal (27.2 m²/L at 25 microns). See APPLICATION for coverage rates. †

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