Uniseal® Sizes 1/4" to 1" High quality rubber tank seals for buffer tanks and soft wash plumbing. Reduce fail points with our thru tank plumbing seals. Our rubber seals replace traditional plumbing hardware with a single injection molded unit requiring no component parts. It was designed to solve many of the issues of pipe to tank connections. TPE melt-processable rubber Long-lasting Resistant to acids, oils, greases, gasoline & sewage Withstands pressure & suction Withstands heat & cold Easy installation Reduced labor & material costs In static conditions, the seal is good up to 65 PSI Hole Sizes: For Hose with dimensions: 1/4" ID x 0.375" OD, Hole size required: 0.5" For Hose with dimensions: 3/8" ID x 0.675" OD, Hole size required: 1" For Hose with dimensions: 1/2" ID x 0.840" OD, Hole size required: 1.25" For Hose with dimensions: 3/4" ID x 1.050" OD, Hole size required: 1.25" For Hose with dimensions: 1" ID x 1.315" OD, Hole size required: 1.75"