Norwesco 65 Gallon Black Horizontal Leg Tank

The Norwesco 65 Gallon Black Horizontal Leg Tank (SKU 41805) is a 65-gallon polyethylene horizontal leg tank built for portable hauling on a skid, trailer, or truck bed. Molded-in legs hold the cylindrical body level so liquid stays put in transit, and the black resin shields contents from light. It measures 43 inches long by 23 inches wide by 26 inches high, giving a 23.0 x 43.0-inch footprint that fits tight pickup beds and small applicator trailers. This is a 1.5 specific gravity tank, and that number decides what you can legally and safely haul in it.

Will it work for your job?

Sizing matters most on a leg tank because it rides on a vehicle. Filled with water it carries about 542 lb (SG 1.0 at full), and Norwesco rates it to a maximum contents weight of 813 lb. Do the math the way a skeptic would: 813 / 542 lands right at SG 1.5, so 1.5 SG is a true fill-to-full limit on this shell, not a derated number. That 813 lb ceiling is what lets you run heavier-than-water liquids up to 1.5 SG without overloading the body. Stay under it: a tank that is fine with water can be over its rating with a dense fertilizer or chemical blend. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm your loaded weight before you mount it, and check your trailer or bed capacity. For fitting hardware, see the technical drawing on this page; the drawing documents the lid thread (noted there as "LID THREAD REVISED") so you order the correct cap and any bulkhead fittings.

Chemical compatibility

This is an HDLPE-marked tank rated to 1.5 specific gravity, but the resin is flagged HDLPE with a question mark, so confirm HDLPE versus XLPE with us before putting it into chemical service. The pairings below come from our OEM chemical-resistance reference and are concentration- and temperature-specific, so match your exact conditions before committing. At or under 1.5 SG, this tank suits the following:

• Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
• Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
• Calcium Chloride (40%) - PVC fittings, EPDM gaskets
• DEF (32.5%) - 316SS fittings, EPDM gaskets
• Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
• Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
• Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
• Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
• Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets

EPDM is the common gasket across everything this 1.5 SG tank handles in range; the fitting material is what varies — PVC for most, PP/PVC for the acetic acid and urea solution, and 316SS for DEF. The DEF and urea-solution ratings make this a practical pick for the diesel exhaust fluid and liquid-fertilizer hauling these leg tanks are built for. One honest caution: several chemicals need a heavier-walled 1.9 SG tank, not this one. If you are hauling Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Phosphoric Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite, Sodium Thiosulfate, Sulfuric Acid, or Zinc Orthophosphate, step up to the 1.9 SG version. Those also demand tougher gaskets — Viton for the strong acids and sodium hypochlorite, Aflas for peracetic acid — so it is a different build, not just a thicker wall. Full pairings live on each linked page and the chemical compatibility reference.

The mistake to avoid

The error that wrecks leg tanks is assuming "it held water, so it'll hold anything." It will not. This shell is rated to 1.5 SG and 813 lb of contents; load a denser liquid or a 1.9-SG chemical and you exceed both. Verify your liquid's specific gravity and your loaded weight first, and confirm the resin is HDLPE versus XLPE before any chemical use. If you need help spotting whether a blend is stratifying or salting out before it loads, the guide on fertilizer-blend tank stratification walks through the field checks. For DOT scope on towed applicator and leg tanks, see our notes on Norwesco applicator and leg tanks and loaf-style portable utility tanks under 49 CFR.

This tank ships LTL freight, quoted live to your ZIP. Because Norwesco molds it at ten plants coast to coast — Fairfield, TX; Griffin, GA; Hanford, CA; Owego, NY; Shawnee, OK; Sheldon, IA; St. Bonifacius, MN; Tooele, UT; Washington Court House, OH; and Washougal, WA — there is almost always one near you, and your freight quotes from the closest, which is where most of the savings come from. Run your ZIP in the Freight Cost Estimator for a same-day rate, or call 866-418-1777 and we will confirm the right tank, the right fittings, and the closest shipping point for your address.