Battery Bumpers?

Does anybody run o-ring battery bumpers like Malkoff offers? I have a couple of weapon mounted lights running P60 drop ins which I would like to do this on and I’m just wondering if somebody could check what size? I have an SAE nitrile o-ring kit but none of them really fit right. I’m looking at a Customlites D26 in a L2M as an Malkoff M61N in a SF G2L FWIW.

The following might be relevant to this topic:

Necro alert. If anyone is still interested in this after all this time……

A little while back I got tired of battery rattle in my 18650 lights so I went looking for ideas and found this. Now it might not quite be the ‘shockproofing’ that people are hoping for, but having elastic orings at the ends of your battery tube to help hold the battery in place and cushion it at least somewhat from more extreme impacts can’t be a bad thing.

Here’s what I did and found. I took my calipers and measured the inside diameters of the battery tube areas in my 18650 lights (all of mine are single cell). Then I went to the local hardware store (not big box DIY store, a real hardware store) and in the faucet repair section I bought some orings where the outer diameter was about equal to or just a little bit greater than the inside diameter of the lights (battery tube area, remember), in differing ‘thickness’ or inside diameter. So the orings with circular cross section have an outer diameter, an inside diameter, and a thickness (of the circular cross section of the actual oring material). ID + 2* thickness = OD.

I got some good results with orings of 19mm OD and 13mm ID, so 3mm thickness. One oring positioned in the light on each end of the battery. In my Convoy S6 and M1 lights that size worked a treat, no more battery rattle at all and even anything I simulate as an impact on the bezel doesn’t seem to do anything (no sound from the battery hitting against anything). For some other lights I got better results with 19mm OD and 12mm ID, so 3.5mm thickness. Those work really well on my C8 and C8+ lights and stop rattle where the thinner orings didn’t completely stop it.

Once I got the sizing down… well you can get 10 or 20 packs of nitrile or silicone orings (whatever you like) cheaply in most any size through your favorite giant online retailer.

Of course YMMV and it’s not going to be a silver bullet to make your Convoy as tough as a Malkoff, but it’s cheap and easy to do, it stops rattling and it won’t make your light less durable.