Hi,
Where can I find 55mm (2.16”) blue GITD O-Ring ?
I want to custom my Kaidomain V6 (AAA) with something that’s glow in the dark (tritium is expensive)
Are you sure you have the size right? That sounds big for a AAA.
Here’s a 54mm GITD:
http://www.intl-outdoor.com/54mm-glow-in-the-dark-orings-2-pcs-p-428.html
Here are some smaller ones.
http://www.shiningbeam.com/servlet/the-26/Assorted-size-G.I.D-O-dsh-rings/Detail
You can always splice and glue with cyanoacrylate (super glue).
Probably a decimal error… 5.5mm
5.5mm is too small, AA batteries are 10mm in diameter.
I believe he is talking about this: “http://kaidomain.com/product/details.S007829” . “Length (7.75cm): Weight (28.5g) Head Diameter: (1.65cm)”. 1.65 cm = 0.6 in.
Thank you luvlites for the link
Kaidomain measures are wrong
the body diameter is 55mm, i guess 54mm o-ring will fit
Are you sure it’s 55mm? For size comparison, 55mm is length of an AA battery, or width of a credit card.
The light you are talking about is really 2.16 inches wide? Sure doesn’t look like it in the picture. I only found one KD V6 listed. Got a link to what you are talking about? Just curious.
Yeah, that number is way wrong. Get an actual measurement off the flashlight.
Oops ! Sorry
the CIRCUMFERENCE is 55mm
diameter is 1.6cm
2 x pi x 16mm / 2 = 50.3mm
my formula for circumference. i might be wrong though
That sounds more like it. 16mm/1.6cm (0.65 inches) is the diameter of a 16340 battery. My AAA MagLite Solitaire is 12.9mm (0.5 inches).
55/π results in 17.5mm diameter… so that doesn’t works out with his 1.6cm measurement either :S
how about a link to this light? thanks.
saypat - see post #4. I put the link there.
When I did mathematics (a long time ago) the formula for the circumference of a circle was pi x D (or pi x 2R).
So if circumference is 55, diameter = 55mm/pi = 17.5mm.
How many BLFers does it take to do a simple math problem. 
Woody got it right.
Maybe, but of course the diameter of the torch probably won’t bear a close enough relation to the size of O Ring needed. 
Circumference of the light or the o-ring?
55mm/pi = 17.5mm. The assortment from Shining Beam had 16mm and 18mm GITD rings, which you can always modify if need be.
international outdoors carries a 25 mm blue one that you can trim,i make custom ones but 2mm ring in a small light would probably be too big and finding tubing smaller than this has proved a pain.