RogerC 4 Posted July 17, 2017 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. Share this post Link to post Share on other sites
blibecap 29 Posted July 17, 2017 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. bill 1 Share this post Link to post Share on other sites
bvanant 181 Posted July 18, 2017 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. Roger: Remind me again what your day job is. This (as opposed to your day job) is not rocket science. Try the http://www.theoringstore.com/index.php?main_page=product_info&cPath=367_803_2202&products_id=38900 these are yellow, you can get them in multiple colors as well. About 6 cents each. Cheers Bill Share this post Link to post Share on other sites
blibecap 29 Posted July 18, 2017 (edited) 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... 3785 $0.09 Add: Min: 6 Edited July 18, 2017 by blibecap Share this post Link to post Share on other sites
RogerC 4 Posted July 18, 2017 Thanks, everyone. The smallest size I've tried is: #006 ID:1/8" x OD:1/4" CS:1/16" and it's damn small and hard to get on, but still too big. Mine are hard, though, 70 durometer, maybe something softer would mash flat and make it into the bore. The 007 is a size bigger, guess I'll try a 005. Hey Bill... if there is one fundamental truth in rocket science, it's getting the right size oring, believe me. Share this post Link to post Share on other sites
TimG 62 Posted July 18, 2017 Hey Bill... if there is one fundamental truth in rocket science, it's getting the right size oring, believe me. Brilliant! (and, yeah, sadly true) Share this post Link to post Share on other sites
blibecap 29 Posted July 18, 2017 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. Bill Share this post Link to post Share on other sites
azcaddman 0 Posted July 18, 2017 You can also order from http://www.divervision.com/howshot-spare-o-ring-for-ys-fiber-adapter-FA-OR.html?search=howshot%20o-ring (i've ordered the howshot cable ends, they work fine with generic toslink cables ) Share this post Link to post Share on other sites
kokomobluewater 0 Posted February 9, 2018 I am in need of replacement O-rings for a sea and sea fiber optic cable. SS50128,can anyone tell me the correct size ? thank you very much... Share this post Link to post Share on other sites
kokomobluewater 0 Posted February 9, 2018 I am in need of replacement O-rings for a sea and sea fiber optic cable. SS50128,can anyone tell me the correct size ? thank you very much... Share this post Link to post Share on other sites
bvanant 181 Posted February 10, 2018 Parker size 2-006 1/8" 1/4" 1/16 In metric sizes, the closest is probably 1.5 mm cross x 3 mm ID. Cheers Bill Share this post Link to post Share on other sites