The seal itself cost less than 7 bucks.
Use a small regular (flathead) screwdriver to pop the old one out.
Just make sure that the new one goes in evenly and is flush with the block.
133whp-126ftlbsTQ Eclipse CD8443,JBL Px300.4, JBL GTO7001, PPI 356cs, JBL p1024(Hooray!) SubThump enclosure, RAAmat BXT, Damplifier Pro
Hatch Nation #140
Caeci caecos ducentes