Question about on/off o rings

[athomas]

The X-valve rebuild kit should have orings 18 and 23. They are standard on-off orings that come in all retro and X-valves. They just happen to be the same size as the level 7 powertube kit.
The X-valve kit lists 2 powertube orings.

[tucson.az.jbreen]

When I lay the old ones out, I can not find ones that match in the pile of new ones. Are the new ones smaller and stretch to fit?

[tucson.az.jbreen]

Snapchat-2159989587320185369.jpg

[athomas]

The 3 orings in the upper right corner look like the ones you are looking for. The 2 small ones together on the left look like on-off top orings that would fit inside them.

[Tunaman]

The 3 orings in the upper right corner look like the ones you are looking for. The 2 small ones together on the left look like on-off top orings that would fit inside them.

I dont think so...
Top right 3 look like L10 inside the carrier orings
Top left 3 look like Reg pin/on/off top orings
The single oring above the black circlip looks like the powertube/on/off hole oring.

[tucson.az.jbreen]

After work I will lay out the old o rings along side the respective pieces of the on off assembly, and I'll lay them next to the new ones.

When I did this earlier though, there were no obvious matches for the top and bottom o rings in the on/off.

I believe I have the two small o rings.

I'll try again tonight, pics to follow.

Thanks,
Jim

[athomas]

I dont think so...
Top right 3 look like L10 inside the carrier orings
Top left 3 look like Reg pin/on/off top orings
The single oring above the black circlip looks like the powertube/on/off hole oring.

You would know better. I was having a hard time with size comparison and was just going by ruler and percentage approximation on a screen. It was difficult due to the resolution. Obviously not accurate enough. I should have gotten my orings out and did a real size comparison.

[Tunaman]

You would know better. I was having a hard time with size comparison and was just going by ruler and percentage approximation on a screen. It was difficult due to the resolution. Obviously not accurate enough. I should have gotten my orings out and did a real size comparison.

Well you know also... after seeing these orings day in and day out for 20 something years just looking at them becomes second nature...until you run into the #780 banjo bolt orings. They fit NOTHING else in a mag. When i think about the above picture more, the oring above the black c-clip may very well be the plastic backup washer. That washer and the powertube oring are basically the same outer diameter. Hard to tell from the pic.