I have a 3" keene dredge and was unsure of how old the pump seals were so I replaced all of them. The 2 interior seals were cracked, but the O-ring seal looks good. I replaced all and will buy spares at Gold-N-Dector this weekend, so I have no need for it. Can't guarantee it, but whoever needs it can have it. I think all the pumps P180 and smaller are the same. No need to waste $30 and wait 2 weeks for Keene to mail it.