Series FC20

Pota-Pox (Fast Cure)

This product has been discontinued. Please contact your local sales representative for further assistance.

Generic Type

Polyamide Epoxy

Common Usage

Fast-curing protective coating for use in steel and concrete structures. Contact your Tnemec representative for other systems and additional information on potential uses.

Special Qualifications

Certified by NSF International in accordance with ANSI/NSF Std. 61 for use on the interior of potable water storage tanks and reservoirs of 6,000 gallons (22,710 L) capacity or greater. Reference Tnemec's certified product listing at for details on the maximum allowable DFT.

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


Series 215

Volume Solids

58.0 ± 2.0% (mixed) †


1211 Red, 1255 Beige, 00WH White, 15BL Tank White, 39BL Delft Blue.
Note: Epoxies chalk with extended exposure to sunlight. Lack of ventilation, incomplete mixing, miscatalyzation or the use of heaters that emit carbon dioxide and carbon monoxide during application and initial stages of curing may cause yellowing to occur.

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.

Theoretical Coverage

930 mil sq ft/gal (22.8 m²/L at 25 microns). See APPLICATION for coverage rates. †

Curing Time

Temperature To Touch To Handle To Recoat Immersion
75°F (24°C) 1 hour 2 hours 3 hours 6 days
65°F (18°C) 2 hours 4 hours 5-6 hours 8 days
55°F (13°C) 3-4 hours 6-8 hours 10-12 hours 12 days
45°F (7°C) 6-7 hours 12-14 hours 16-18 hours 20 days
35°F (2°C) 8-10 hours 16-18 hours 20-22 hours 25 days

Curing time varies with surface temperature, air movement, humidity and film thickness.


Interior: Series 20, FC20, 22, 141, N140, N140F, 264, 265
Exterior: Series 20, FC20, 22, 27WB, 30, 66, L69, L69F, N69, N69F, V69, V69F, 72, 73, 104, 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.

Number of Components

Two: Part A and Part B

Volatile Organic Compounds

Unthinned: 2.94 lbs/gallon (352 grams/litre)
Thinned 10%: 3.30 lbs/gallon (395 grams/litre) †


Self-priming or Series 1, 20, 91-H₂O, 94-H₂O, N140, N140F.

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