I removed my outdoor faucet and took it to the hardware store to get a new washer. They had a large variety of sizes but none was an exact fit. I got one that was a bit smaller as the employee said that the sealing doesn't take place at the outer edge. I also took a bevel washer of the same size. The original washer was flat. Is it ok to replace with a beveled washer? I'm thinking that the flat washer will widen when it is compressed. I installed the flat washer and it works. I'm just curious about washer sizes....the hardware store had dimensions in 32nds?