TERF® M20 Black Rubber Flat Washer M20 / 20mm ID (Hole) x 36mm OD x 3mm Thickness Flat Rubber Washers - Pack of 10

Did the job perfect

Got what I ordered very fast deliveryJust what I needed for my DIY problem on a pump

I ordered these to use in securing plastic motorbike bodywork. You normally have a mushroom headed bolt, sometimes a metal washer, and then a rubber or nylon washer to prevent damage to the bodywork. The problem with these is that they're very soft and just squeeze out from under the metal washer when the bolt is tightened.They're probably not meant for such applications, bearing in mind one side of the washer is sticky so they're designed to stick to something. I can't think of many other situations where you might use them but I'm sure they're of use to someone.

No complaints.

used for a pond filter joint

Very bad quality.