Originally Posted by
gweddig
Originally Posted by
KBeezie
...avoid anything with petroleum jelly, rather use Silicone Grease, the 90%/10% jars you get at Ace Hardware is ok, it's 90% silicone grease and 10% of a silicone based thickener (so it's not runny like oil), that stuff won't dissolve and eat rubber/plastic like petroleum does.
Good work on your Touchdown! They are a fun intermediate pen to fix.
Just a small bone to pick about the silicone grease. The pros usually recommend 100% silicone grease to prevent the introduction of unknown materials to the plastic. The 10% could contain something that may cause problems in the long run. The pure stuff is easily available from several restorers and from most scuba shops.
Look forward to seeing your next repair.
--greg
Yes this was discussed in quite a bit of details over on FPN (the same debate where OcalaFlGuy attacked me for the same reason [but including more derogatory remarks like being an idiot, etc.], until someone else backed me, but then I ended up getting banned from FPN for a month because I disagreed with him and backing my claim, and my mentions of all the correct details were removed by the moderator, but left when someone else said the same thing I did to hide all evidence of a debate), and it's already been determined the 90/10% from places like Ace's Hardware is perfectly fine because the 10% is Silicon dioxide, it acts as a thickener so it's not all runny like oil.
It's 90% is Dimethylpolysiloxane and 10% Silicon dioxide, the same stuff commonly recommended in the Dive shops.
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