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Member Since 28 Mar 2004
Offline Last Active Jul 26 2017 05:07 AM

Posts I've Made

In Topic: my fiber optics won't stay put

18 July 2017 - 06:52 AM

Hi Roger


Thanks for the reply. You are correct the Parker size 2-007 5/32" id - 9-32 od 1/16 width or 3.68mm id 1.78mm  width is not correct. I went back and remeasured the o-ring on my INON, Sea&Sea, Ikelite fiber optics and they are Parker size 2-006 1/8" 1/4" 1/16". What brand is your fiberoptic cables? The normal durometer is 70 but you can get a softer one, 50 durometer. 


On a different subject, yes I understand that rocket science and o-rings are important. Please not that there are two different Bill's trying to provide help with your question. I never mentioned rocket science. 



In Topic: my fiber optics won't stay put

17 July 2017 - 06:50 PM

if you want soft ones then you can get them at the same place 



B50007 -007 B50 (NBR) Buna-N Nitrile 50 Duro O-Ring

5/32"ID X 9/32"OD X 1/16"CS Buna-N O-Rings 50 Duro (NBR): The most commonly used elastomer for sealing products. Nitrile, also known...




Min:  6

In Topic: my fiber optics won't stay put

17 July 2017 - 08:56 AM

The o-rings on my fiber optic cable rotted and fell off. I replaced them with the smallest, thinnest, o-rings I had, but no luck: the new o-rings are so large or so stiff that I can't get them inserted anymore. I took the o-rings off, but now they are really loose and just falling out. I hold them in with blue tape, hair ties, whatever I can find. Nothing works well. Any tips? I think I need to find a source for really small o-rings with a really soft durometer.

Hi Roger


The o-rings are a Parker size 2-007 5/32" id - 9-32 od 1/16 width or 3.68mm id 1.78mm  width


I hope this helps. 



In Topic: Coolers for rig transportation / Rinse "again sorry"

29 June 2017 - 07:21 AM

Are AO bags zippers water tight ?  NO not water tight  bags are tough and sturdy just a little bulky for packing due to insulation. 

In Topic: Nikon 8-15mm in the house!

20 June 2017 - 02:29 PM

Usable range on FX will be based on having a dome with a removable sunshade. This will be needed from 8mm through to around 13mm. 


On DX, the lens partially vignettes at 8 and 9mm, before offering usable image from 10 through to 15mm.


Pool testing on Sunday....











Isn't the vignetting caused by the fact that the dome is not in the propler location and the lens is seeing the backing plate for the dome?