Tuff Stuff Products KMT99 HD Oval Tank, 140-Gallon 140 gallon heavy duty oval tank, tub with 3/4" brass drain plug 100-Percent recycled LDPE flexible plastic which gives rubber-like quality Go Green. Buy Recycled Impact Resistant 140 gallon heavy duty oval tank, tub with 3/4" brass drain plug 100-Percent recycled LDPE flexible plastic which gives rubber-like quality Go Green. Buy Recycled Impact Resistant 140 gallon heavy duty oval tank, tub with 3/4" brass drain plug