Seals, Fittings and Sizing Charts

These charts and finders match a measurement to a standard part size. Enter the O-ring, cord, tube, bottle neck or trash can dimensions and see the size to buy, with the groove depth and width for an O-ring.

Tools in this group

• Plastic Bottle Cap Size Chart — Measure across the threads of the bottle neck and enter it to find the closure size, such as 24-410, with the neck finish chart.
• Grommet Size Chart — Enter the cord, rope or rod diameter, or the hole you already have, to find the grommet size, with the chart in inches and mm.
• Heat Shrink Tubing Size Chart — Enter the largest diameter the tube must slide over and the smallest it must grip to find the heat shrink size and ratio that fit.
• Nitrile O-Ring vs Viton O-Ring Material Chart — Pick an O-ring material and a fluid to see if it is resistant, not resistant or not stated, with each material's temperature range.
• O Ring Groove Size Chart and Gland Calculator — Pick an O-ring and see the recommended groove depth and width, then enter your own groove to check squeeze, gland fill and stretch.
• O Ring Size Chart (AS568) and Size Finder — Measure your O-ring and find its AS568 dash number, or search the full size chart in inches and millimetres.
• Trash Bag Size Chart and Calculator — Measure your trash can to get the flat width and length of the bag that fits it, with the overhang you want.
• Trash Can Sizes: Gallons to Dimensions — Enter the can capacity in gallons or litres and one dimension to get the other inside dimensions of a round or rectangular trash can.