Looking for a thicker o-ring to fit under the window of a SF M6

[UnderTheWeepingMoon]

I recently acquired an M6 with an aftermarket bezel ring. I am a little bit concerned that the o-ring under the window is not being fully compressed, as the window feels slightly loose, and am worried that water resistance may be compromised somewhat. Does anyone know the size of the M6 window o-ring and whether there is a thicker option available?

 

[Mettee]

I do not know the size off hand, but it is a flat black or square oring. I can measure when I get home later if no one else answers.

 

[UnderTheWeepingMoon]

I just noticed Lighthound sells a replacement O-ring for the KT4, so I'm going to order one and give it a try. Hopefully it solves the problem.

Edit: Just realised these O-rings are not for the window but for the neck of the light.

 

[Torque1st]

Download the Parker O-ring manual for available sizes.

 

[VegasF6]

I have been accused of being budget minded (ok, cheap, whatever) so, if it was me, I would build up the o-ring groove a little bit with some blue tac or yellow handitak.

 

[UnderTheWeepingMoon]

I have been accused of being budget minded (ok, cheap, whatever) so, if it was me, I would build up the o-ring groove a little bit with some blue tac or yellow handitak.

haha. I think that's a little too budget minded for me. The Parker manual looks to be a good resource but I still don't know the size of the stock o-ring. I might just go to a hardware store and try to find one that fits.

 

[mknewman]

I use the glow rings that Lighthound sells to space the el-cheapo aspherics I use on P60s. They are big enough to add a few mm to the focal length.

Marc

 

[UnderTheWeepingMoon]

I just got back from an o-ring supplier on my side of town. A 55mm x 3mm o-ring is a perfect fit and leaves virtually no gap with my bezel ring screwed firmly down.

 

[Mettee]

What type of material is that o-ring you found? Color?

 

[UnderTheWeepingMoon]

I think it's EDPM. It's black.