i got the socks yesterday that i originally ordered with the flared up handle rings. Its a good thing I placed a order for the other ones with the seal ring because the rings are flatter. My sump is a eshopps rs300 with a built in sock holder and the lid that goes over and covers the sock area would not have sit flush with the sump sock holder area. Might not be a problem for others but it would have been in my situation. The new batch of socks are scheduled to come today. cant wait.