Waterproof bags

[CatOne]

Don't have a Drizone but I have found paraffin to be a good lube for zippers. They run smoother and the wax does not come off on contact with equipment or clotheing. Rub the bottom of a candle on the zipper to test it.
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Not really the same thing -- the DryZone "zipper" has some interlocking rubber which provides the waterproofness.  Paraffin or other wax may work "okay" but the lube I think is just some silicon lube.  If I weren't a lazy f**k I'd go upstairs and read the bottle :-/

[JeffKohn]

After reading previous posts, i might not have ordered a dryzone but since I had already taken delivery, I was stuck.  I have to agree with you once i put the lube on the zipper worked fine and I took the bag on a white water rafting trip and no problems.  SO what is that lube made out of so I can buy some more when the time comes?
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Your local dive shop should have something you can use, as wetsuits have the same type of zipper.