Ehm.... "O-ring grease"? Would it be OK to use Vaseline, or some other non-oil based stuff (silicone?), or is it vital to the degree of water proofness that "O-ring grease" is used?
Yours Sincerely, Robert Holsting, Denmark
1/81 SSBN Ohio Class scratch builder, more at www.robse.dk
"Never be afraid to try something new; remember that it was amateurs who build Noah's Ark, and professionals who build the Titanic"