Series 20


Generic Type

Polyamide Epoxy

Common Usage

Industry standard for potable water epoxy coatings for nearly 40 years. Known for its forgiving application characteristics in adverse and varied conditions, and for its benchmark performance.

Special Qualifications

Certified by NSF International in accordance with ANSI/NSF Std. 61. Ambient air cured Series 20 is qualified for use on the interior of potable water storage tanks and reservoirs of 6,000 gallons (22,712 L) capacity or greater. Reference Tnemec's certified product listing at for details on maximum allowable DFT.

Conforms to AWWA D 102 Inside Systems No. 1 and 2. Contact your Tnemec representative for approved systems and additional information on potential uses.

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Self-priming or Series 1, FC20, N140, N140F, 91-H₂O, 94-H₂O.

Number of Components

Two: Part A and Part B

Recommended DFT

2.0 to 6.0 mils (50 to 150 microns) per coat. Note: Dry film thickness that exceeds published recommendations but is in compliance with SSPC PA-2 and ANSI/NSF Std. 61 certifications, is acceptable. Note: Number of coats and thickness requirements will vary with substrate, application method and exposure. Contact your Tnemec representative.

Curing Time

Temperature To Touch To Handle To Recoat Immersion
90°F (32°C) 1 hour 5-7 hours 6-8 hours 4-5 days
80°F (27°C) 1.5 hours 7-9 hours 8-10 hours 6-7 days
70°F (21°C) 2 hours 10-12 hours 12-14 hours 7-10 days
60°F (16°C) 3 hours 16-20 hours 20-24 hours 10-12 days
50°F (10°C) 4 hours 24-30 hours 30-36 hours 14-16 days

Curing time varies with surface temperature, air movement, humidity and film thickness.
Ventilation: When used in enclosed areas, provide adequate ventilation during application and cure.


Unthinned: 4.18 lbs/gal solids
Thinned 10%: 5.16 lbs/gal solids

Theoretical Coverage

914 mil sq ft/gal (22.4 m²/L at 25 microns). See APPLICATION for coverage rates. †

Volatile Organic Compounds

Unthinned: 3.02 lbs/gallon (362 grams/litre)
Thinned 10%: 3.37 lbs/gallon (404 grams/litre) †


Interior: Series 20, FC20, 22, N140, N140F, 141, 264, 265
Exterior: Series 20, FC20, 22, 27WB, 30, 66, L69, L69F, N69, N69F, V69, V69F, 72, 73, 118, N140, N140F, V140, V140F, 141, 161, 700, V700, 701, V701, 1026, 1028, 1029, 1074, 1074U, 1075, 1075U, 1094, 1095, 1096, 1224. Note: When topcoating with Series 700, V700, 701, or V701, an intermediate coat of Series 73, 1075, 1075U, 1095 or 1096 is required. Note: A maximum recoat time may apply depending on the topcoat specified.


Series 215

Volume Solids

57.0 ± 2.0% (mixed) †

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