I rebuilt my water pump Due to the mud I dredged up getting off the sand bar I hit per a couple folks recommendations. There was a lot of sediment around the housing so I took the advice to go down to the seal and o-ring (Orange) under the base housing. The oring is part 90011. When I put the new one in I struggled mightily.

I got it In but all the orange rubbed off. Is that going to be a problem?

Also, what’s the easy way to put that O-ring 90011 in?