The Snyder Industries 60 Gallon ASTM HDPE Black Double Wall Tank (SKU 5680002N51) is a 60-gallon double wall tank molded in high density linear polyethylene with a black exterior, standing 41 inches tall on a compact 26 x 26-inch square footprint. The double wall construction means the primary tank sits inside an integral outer containment shell, so any leak from the inner wall is caught rather than spilled - the reason operators reach for this design when a single-wall tank parked over bare ground or a drain is not acceptable. If you are comparing this against a 1.0 or 1.5 SG-rated tank, note this unit is already built to a 1.9 specific gravity rating - the heavier-duty rating is included, not an add-on.
Will it work for your job
Full of water, this tank carries about 500 lb, and it is rated to a maximum contents weight of 951 lb - the headroom that lets you store fluids heavier than water up to the tank's 1.9 specific gravity rating. That 1.9 SG number is the spec to check first: it tells you the densest liquid the inner wall is engineered to hold. As long as your fluid's specific gravity stays at or under 1.9, the wall thickness is sized for the load; that covers water (1.0) with plenty of margin and a wide range of denser solutions. Two top openings handle the work: a 14-inch PE threaded/vented fitting is your plumbed inlet and vent path, and a separate manway with an 11-3/8-inch access opening is for filling, internal inspection, and hand access - the manway is a lid, not a plumbed port, so route your inlet and discharge through the threaded fitting. The exact fitting positions and the outer-wall detail are shown on the technical drawing on this page; confirm those locations match your inlet, vent, and discharge plan before you set the tank.
Size it before you commit
Run your real numbers through our Tank Sizing Calculator and the Tank Sizing Guide so your real working volume - always below the 60-gal nameplate after freeboard - matches your draw and refill cycle. For the why behind that, the freeboard sizing guide for Snyder double-wall tanks per ASTM D1998 walks through thermal expansion and density, and the HDPE wall-thickness and vapor-headspace guide explains where these tanks actually wear over time. The 26 x 26-inch footprint is compact, but at 41 inches tall, confirm your overhead clearance for the manway lid and fill access before you settle on the spot.
The mistake to avoid
The common error on a double wall tank this small is filling it with a liquid denser than its 1.9 SG rating to "save space." Do not. The double wall and the 951 lb contents ceiling are matched to that 1.9 figure - exceed it and you are loading the inner wall beyond what it was built for, which defeats the whole point of paying for containment. Verify your fluid's specific gravity, then verify it again against the 1.9 rating. Confirm the manway gasket and seal material is rated for your specific fluid before fill - tell us your liquid and we will confirm it. If your application is fire-water or emergency reserve storage at a remote site, the rural fire-water reservoir design guide covers NFPA 22 sizing and cold-climate protection, and for buried or steel-adjacent installs the cathodic disbondment testing reference explains the interstitial-space considerations.
This Snyder 60 gallon HDPE double wall tank ships LTL from the Snyder plant in Marked Tree, Arkansas, with freight quoted live to your ZIP - get your number from the Freight Cost Estimator or call 866-418-1777 and we will work it out with you. Tell us your ZIP and your liquid's specific gravity and we will confirm the tank is right before it leaves the dock.
