
I often needed O-rings when repairing or overhauling pressure washers, car parts, appliances etc. Instead of the usual rubber O-rings, I found silicone rings. Silicone is very stable, impervious to a wide variety of liquids and chemicals, and withstands high temperatures. I found this range had the sizes I was looking for and a very reasonable price so I made the purchase. Very good range of 15 different diameters and thicknesses.