The Enduraplas 1100 Gallon Black Horizontal Leg Tank is a haul-class polyethylene tank built to travel full down the road and across the field, riding on its molded legs. At 94 inches long, 60 inches wide, and 63 inches tall, it carries 1,100 gallons on a 60.0 x 94.0-inch footprint, and the opaque black resin blocks light from reaching the contents. This is the unit people look for as a horizontal leg tank or an Enduraplas horizontal tank when they need a tank that hauls dense liquid and stands stable when parked.
Will it work for your load?
Run the weight math before you buy. Full of water this tank carries about 9,174 pounds of liquid; at its 1.9 specific-gravity rating the wall is built to hold contents weighing up to roughly 17,431 pounds. That 1.9 SG is the headroom that lets it haul dense agricultural and industrial liquids, not just water. Match the contents to that number: if your liquid's specific gravity stays at or under 1.9, the tank wall is rated for it. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm fill weight against the legs and your trailer or skid rating before you load and roll.
Chemical compatibility
This is a polyethylene tank rated to 1.9 specific gravity, and the resin reads as HDLPE with an open question. Because every row below is resin-dependent, confirm HDLPE vs XLPE with us before you commit any chemical to this tank - that one verified fact governs the entire list. Compatibility is also concentration- and temperature-specific, so check each fluid against the OEM chemical-resistance chart for your exact concentration and operating temperature, and match fittings and gaskets to the chemical, not to the tank. The following are listed as compatible for this resin and SG class:
- Acetic Acid at 60% - PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate at 50% - PVC fittings, EPDM gaskets
- Calcium Chloride at 40% - PVC fittings, EPDM gaskets
- DEF at 32.5% - 316SS fittings, EPDM gaskets
- Ethylene Glycol at 100% - PVC fittings, EPDM gaskets
- Ferric Chloride at 50% - PVC fittings, EPDM gaskets
- Ferric Sulfate at 60% - PVC fittings, EPDM gaskets
- Ferrous Sulfate at 20% - PVC fittings, EPDM gaskets
- Hydrochloric Acid at 37% - PVC fittings, Viton gaskets
- Hydrofluoric Acid at 48% - PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid at 26% - PP/PVC fittings, Viton gaskets
- Hydrogen Peroxide at 50% - PVC fittings, Viton gaskets
- Magnesium Chloride at 30% - PVC fittings, EPDM gaskets
- Peracetic Acid at 30% - 316SS fittings, Aflas gaskets
- Phosphoric Acid at 85% - PVC fittings, Viton gaskets
- Polyaluminum Chloride - PVC fittings, EPDM gaskets
- Potassium Carbonate at 50% - PVC fittings, EPDM gaskets
- Potassium Hydroxide saturated - PVC fittings, EPDM gaskets
- Propylene Glycol - PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate - PVC/PP fittings, EPDM gaskets
- Sodium Bisulfite - PVC/PP fittings, EPDM gaskets
- Sodium Carbonate at 30% - PVC fittings, EPDM gaskets
- Sodium Hypochlorite at under 16.5% - PVC fittings, Viton gaskets
- Sodium Thiosulfate at 40% - PVC fittings, EPDM gaskets
- Sulfuric Acid at 98% - CPVC fittings, Viton gaskets
- Urea Solution at 50% - PP/PVC fittings, EPDM gaskets
- Zinc Orthophosphate - PP/316SS fittings, EPDM gaskets
- Ozonated Water up to 10 PPM - PVC fittings, EPDM gaskets
The oxidizers on this list - Sodium Hypochlorite, Hydrogen Peroxide, and Peracetic Acid - off-gas in service and need proper venting in addition to the Viton and Aflas elastomers shown. See the full, concentration-specific guidance on each chemical's page and the master chemical compatibility reference before committing a fluid.
The mistake to avoid
The costliest error on a 1.9-SG haul tank is treating the SG rating as the whole story. The rating governs the wall, not the legs and not your transport setup: a tank can be wall-rated for a dense load and still overload a trailer or skid that was sized for water weight. On a moving load this matters twice over - a partially filled tank surges, and the full 17,431-pound rating assumes proper trailer or skid support beneath the legs, so size your axles and supports to the loaded weight, not to water. The second mistake is matching fittings and gaskets to the tank instead of the chemical: note how the list above swaps Viton for EPDM on the aggressive acids and oxidizers and calls for 316SS on DEF and peracetic acid. Get the elastomer wrong and the seal fails before the tank does. Because the resin is still unconfirmed (HDLPE vs XLPE), do not fill this tank with any listed chemical until you confirm the resin with us. Contact us to confirm fitting locations and port sizes before ordering.
This tank ships LTL from Neche, ND, with freight quoted live to your ZIP. Get your number with the Freight Cost Estimator or call 866-418-1777. For dense agricultural hauling, read Norwesco Applicator and Leg Tanks for Fertilizer, the DOT classification guide for farm fleet use, and Fertilizer-Blend Tank Stratification before you load and roll.
