Series 66HS

Hi-Build Epoxoline

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

Generic Type

Polyamide Epoxy

Common Usage

A high-solids, low VOC, pure polyamide epoxy that offers exceptional protection to a variety of substrates in atmospheric and immersion environments. Applied as a primer, intermediate, or topcoat, this versatile coating also accepts a wide-range of finish coats, allowing for a coating system tailored to specific exposure conditions.


215, 217, 218

Curing Time

Temperature To Touch To Handle To Recoat Immersion
95°F (35°C) 1 hour 3 hours 6-7 hours 7 days
75°F (24°C) 2 hours 8 hours 12-16 hours 7 days
55°F (13°C) 4 hours 22-24 hours 30-34 hours 12-14 days

Curing time varies with surface temperature, air movement, humidity and film thickness. Note: For faster curing and low temperature applications, add No. 44-705 Epoxy Accelerator, see separate product data sheet for cure information.
Ventilation: When used as a tank lining or in enclosed areas, provide adequate ventilation during application and cure.


46H-413, 27WB, 30, 66HS, 72, 73, 104, 113, 114, 115, 141, 161HS, 262, 265, 290, 291, 740, 750, 1026, 1028, 1029, 1070, 1070V, 1071, 1071V, 1072, 1072V, 1074, 1074U, 1075, 1075U, 1080, 1081, 1095. Refer to COLORS on applicable topcoat data sheets for additional information. Note: When topcoating Series 66HS, the following maximum recoat times apply: with 262 or 265, 7 days; with 740 or 750, 21 days; with 1095, 30 days; with itself, 46H-413, 27WB, 104, 113, 114, 141, 161HS, 290, 291, 1028, 1029, 1070, 1070V, 1071, 1071V, 1072, 1072V, 1080 or 1081, 60 days; with 72, 73, 1074, 1074U, 1075 or 1075U, 90 days. Scarify the Series 66HS surface before topcoating if maximum recoat time has elapsed.

Number of Components

Two: Part A (epoxy) and Part B (polyamide)




Refer to Tnemec Color Guide. Note: Epoxies chalk with extended exposure to sunlight and may yellow on aging. 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 accelerate any potential yellowing. Note: Special color bases are recommended for immersion service. Contact your Tnemec representative for more information.

Theoretical Coverage

1,249 mil sq ft/gal (30.7 m²/L at 25 microns). See APPLICATION for coverage rates. †


Unthinned: 1.17 lbs/gal solids
Thinned 10% (No. 4 Thinner): 1.88 lbs/gal solids
Thinned 20% (No. 4 Thinner): 2.60 lbs/gal solids

Volume Solids

78% ± 2.0% (mixed) †

Recommended DFT

2.0 to 10.0 mils (50 to 254 microns) per coat.
Note: Number of coats and thickness requirements will vary with substrate, application method and exposure. Contact your Tnemec representative.


Steel: Self-priming or Series 1, 20HS, FC20HS, 27, 27WB, 90-97, 90-98, 90E-92, 90G-1K97, 91-H2O, 94-H2O, 394, V530, 161HS
Concrete: Self-priming, 20HS, FC20HS, 161HS
CMU: Self-priming, 130, 1254

Volatile Organic Compounds

Unthinned: 1.54 lbs/gallon (184 grams/litre)
Thinned 10% (No. 4 Thinner): 2.02 lbs/gallon (243 grams/litre)
Thinned 20% (No. 4 Thinner): 2.43 lbs/gallon (292 grams/litre)

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