CV15 w/UV/IR filter: A metric O-ring

[cbretteville]

Advertisement (gone after registration)

Went to a store that sells bathroom fittings and plumbing materials yesterday and asked for an o-ring with the inch dimensions first posted by Al Tanabe. As we're metric over here, that dimension isn't readily available.

 

But: They had a kit they use to create custom o-rings so here is what we did and what works for me:

 

* The tube used was a ø1.6mm (circular)

* Cut a length of 120mm and

* Glue the ends with the appropriate Locktite (part of the kit) crazy glue.

 

The circumference of the e39 filter is slightly larger than 120mm, but this ensures that the o-ring stays in place. The 1.6mm tube makes for a tight, but not impossible fit. A 1.5mm tube might be better.

 

One thing to be aware of. Depending on how perfect the joint of the ring is you'll want that at a part of the filter that isn't being covered by the tulip hood on the CV15.

 

Cheers,

- Carl

[steich]

Hey Carl,

I calculated Al´s non-metric O-ring dimensions to the metric system.

It´s 33,05 mm (inner diameter) and 1,78mm "thick". It is stretched when put over the filter´s thread, so it fits tight, but it fits- and works fine with my CV15!

Stefan

[willy]

I took 35x 1,5. That's OK

[Photoskeptic]

Gee guys, thanks. I still have a metric o-ring kit left over from my Italian car days which should do fine if I ever get my filters from Leica:rolleyes:

[como]

I used a piece of an old bicycle tube. Cut a ring out, stretched it around the E39 filter and cut off the material outside the filter. It fits in very tight.

Maybe a cheap and fast solution.