40-gallon storage tank built for heavy-duty industrial chemical containment. Manufactured by Chemtainer from virgin linear polyethylene (HDPE) rated to handle liquids up to 16.7 pounds per gallon. The 2.0 specific gravity rating handles the heaviest industrial chemicals — built with extra wall thickness where it counts.
The 40 Gallon Plastic Open Top Batch Storage Tank is designed for homeowners, hobbyists, small farms, and mobile applications where compact size matters. At 40 gallons, this is the kind of tank you keep close at hand — on the workbench, mounted to equipment, or tucked in a utility closet. It is compact enough to place anywhere but built to the same standards as tanks ten times its size.
Constructed from virgin linear polyethylene (HDPE) using a single-piece rotational molding process that eliminates seams, weld lines, and potential leak points. The 2.0 specific gravity rating means this tank is built with significantly heavier wall sections than a standard water tank — necessary to safely contain liquids weighing up to 16.7 pounds per gallon. That extra wall thickness is not optional when you are storing aggressive industrial chemicals. Translucent white walls allow visual level monitoring without opening the tank and reflect sunlight to keep contents cooler. UV stabilizers are compounded directly into the resin — not a surface coating — for outdoor service life that lasts the full warranty period and beyond.
This tank measures 30 inches long by 18 inches wide and 18 inches tall, requiring 3.8 square feet of level ground. Set on a flat, level pad of compacted gravel or a concrete slab at least 4 inches thick. Place on a firm, level surface free of rocks or sharp objects that could damage the tank bottom. Ensure adequate ventilation if stored chemicals produce vapors.
This tank ships without pre-installed fittings, giving you full flexibility to position inlet and outlet connections exactly where your plumbing layout requires. Use polyethylene-compatible bulkhead fittings for all penetrations. The 8" lid accommodates fill lines, vent connections, and basic interior access for inspection. Standard garden hose adapter or direct NPT connection works well for tanks this size.
Chem-Tainer Industries has manufactured chemical-resistant polyethylene tanks in the USA since 1957. Their tanks are specifically engineered for chemical storage applications with wall thicknesses and resin formulations matched to the demands of aggressive chemicals. Backed by the Chemtainer manufacturer warranty — contact us for specific terms and coverage details. Every tank is inspected before it leaves the production floor — and we inspect it again before it ships from our facility.
- 40-gallon capacity — sized for heavy-duty industrial chemical containment
- Constructed from virgin linear polyethylene (HDPE) with 2.0 specific gravity rating — handles liquids up to 16.7 lbs/gal
- 30" long x 18" wide x 18" tall
- 8" lid opening for fill, venting, and interior access
- Translucent white walls allow visual level monitoring without opening the tank and reflect sunlight to keep contents cooler
- Seamless one-piece rotational molding — no seams, no welds, no leak points
- Manufactured by Chemtainer — a leading name in rotomolded polyethylene tanks
- Place on a firm, level surface free of rocks or sharp objects that could damage the tank bottom. Ensure adequate ventilation if stored chemicals produce vapors
- Ships via UPS or FedEx ground — typically arrives within 5-7 business days
