If they are not leaking now and you don't damage them when doing the job then no need to replace.
No sealant. They tap in with a seal driver or a socket that is the right size to substitute for one. Not to contradict anyone, but when it is all apart is the time to replace the seal whether it is still good or not. Seals are cheap when weighed against having to pull everything apart again should the old seal fail.Do i need a gasket sealant when installing or they just press in?
thanks! agreed on replacing even if its good, as long as it aint an added PITA....No sealant. They tap in with a seal driver or a socket that is the right size to substitute for one. Not to contradict anyone, but when it is all apart is the time to replace the seal whether it is still good or not. Seals are cheap when weighed against having to pull everything apart again should the old seal fail.
FWIW
YMMV