200Pcs Solid Copper Washer M5-M14 Flat Ring Sump Plug Oil Seal Assorted Set Box Electrical Conductivity Thermal Conductivity

I hear this question a lot can I reuse these crush washers well with the right technique you can let me show you how this works a crush washer is made out of a very soft metal like copper so as it clamps on to the part it actually conforms to the part that it is up against and that is why it seals so well it is very important that we flatten this and get that distortion out of the crush washer with 220 grit sandpaper it's easy to flatten these crush washers so you can safely use them again just keep your finger flat on the crush washer and make sure you're on a nice flat surface and you can start to see where the distortion is and how much more you're going to need to sand in order to get rid of the distortion and have a nice flat crush washer again I see it all the time where people won't flatten these crush washers or they won't use a new one and wonder why is the brake leaking or why