Opti Seal
I have never had a problem getting them in without the J tools, just gotta "lightly coax" them in. The WP drive seal is easy, just find the right sized socket to tap it in. But the Opti seal and crank seal are a little tougher, I got both in square no problem multiple times just using a light hammer or mallet. No leaks and no damage here, just need to be careful.
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