Series 434

Perma-Shield H2S

Generic Type

Modified Aliphatic Amine Epoxy Mortar

Common Usage

A 100% solids, hybrid epoxy mortar designed for severe wastewater immersion and fume environments. Specifically formulated to withstand high levels of hydrogen sulfide gas (H2S), sulfuric acid (H2SO4), as well as other gases common to sewer exposures and severe wastewater environments. Aggregate reinforcement provides additional resistance to abrasion and impact.

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Theoretical Coverage

1,604 mil sq ft/gal (39.4 m²/L at 25 microns). See APPLICATION for coverage rates.


0.06 lbs/gal solids

Volume Solids

100% (mixed)


Concrete: Self-priming or Series 61, N69, N69F, 201. Note: Series 201 must be scarified after 24 hours before topcoating with Series 434. Note: Series 61, N69 or N69F must be scarified after 7 days before topcoating with Series 434. Note: Series 61 is recommended for use in mesophilic anaerobic digesters and other severe exposures. Contact your Tnemec representatives for more information.

Curing Time

Temperature To Topcoat To Place in Service Maximum Recoat
75°F (24°C) 8 hours 2 days 7 days
55°F (13°C) 12 hours 3 days 7 days

Note: Curing time will vary with surface temperature, air movement, humidity and film thickness. Note: If more than 7 days have elapsed between coats, the Series 434 coated surface must be mechanically abraded before topcoating.


Series 435

Volatile Organic Compounds

EPA Method 24: 0.15 lbs/gallon (18 grams/litre)


215, 217, N218

Number of Components

Three: Part A (Amine), Part B (Epoxy) and Part C (Aggregate)

Recommended DFT

1/8 inch or 125 mils (3,125 microns) minimum.

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How to Purchase

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