On my stitch and glue boat I used 8" Beckson pry out deck plates for fore and aft hatches (with a webbing loop for openning and safety tabs). They have an o-ring gasket. Is it advisable to lubricate this gasket to both promote sealing and to ease openning? If so, what is appropriate lube? I don't see anything on the Beckson website about this, nor what material the o-ring is made of. Thanks.