You can use the seadoo 951 pump seal on the rxp/rxt/gtx. I've been using it for a few months now with no issues. I noticed cavitation out of the hole & when I pulled the pump the oem seal lip was bent upwards at the top area. This happened a few times. I've went back n forth with these 2 seals * the 951 seems to be doing fine. The 951 seal it thicker & a more snug fit. Use some spray lube or grease on the seal before installing so it will slip right in.

Just thought i'd share it.