Series 90-98


Generic Type

Ethyl Silicate Inorganic Zinc-Rich

Common Usage

Self-curing, corrosion-resistant steel or ductile iron primer with tenacious bonding and abrasion resistance qualities. Its galvanic action resists undercutting. Excellent stand alone performance in high temperature or long-term atmospheric exposure. Finish with specialized topcoats to improve aesthetics, increase long-term performance or protect the primer from attack in aggressive exposures.

Special Qualifications

Zinc content surpasses requirements of SSPC-PS 12.00 and ISO 8179-Part 2.

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  • Greenish Gray

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Recommended DFT

2.0 to 3.5 mils (50 to 90 microns) per coat.
Note: A minimum of 3.5 mils (90 microns) DFT is required to meet the qualifications of ISO 8179 Part 2. Note: Series 90-98 can be applied in one, high-build coat up to 6.0 mils (150 microns) DFT when left untopcoated.

Theoretical Coverage

1,123 mil sq ft/gal (27.5 m²/L at 25 microns). See APPLICATION for coverage rates.

Volume Solids

70.0 ± 2.0% (practical)

Curing Time

Temperature (50% Relative Humidity) To Handle To Recoat
75°F (24°C) 1 hour 16 hours
0°F (-18°C) 7 days minimum

Moisture is required to achieve proper cure. Curing time will vary with temperature and humidity. At relative humidities below 30%, it may be necessary to gently spray the coated surface with water to achieve proper cure and to minimize recoat time. Consult your Tnemec representative for specific recommendations.


Unthinned: 0.41 lbs/gal solids
Thinned 9% (No. 15 Thinner): 0.49 lbs/galon solids
Thinned 6% No. 18 Thinner): 0.41 lbs/gallon solids

Volatile Organic Compounds

Unthinned: 3.48 lbs/gallon (417 grams/litre)
Thinned 9% (No. 15 Thinner): 3.75 lbs/gallon (449 grams/litre)
Thinned 6% (No. 18 Thinner): 3.75 lbs/gallon (449 grams/litre)


Series 27, 27WB, 46H-413, 46-465, 66, 66HS, L69, L69F, N69, N69F, N140, N140F, 104, 113, 114, 161, 161HS, 971, 1026.

Number of Components

Two: Part A and Part B

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