Hi, Dave,

About a week ago, I broke the O-Ring (YS 0725) on regulator screw of my 140L. I was trying to clean under the O-ring.

So, I purchased 3 O-ring sets for 140. (YS 2730)
What kind of manterial is the O-ring made of?

I got the parts and tried to insert the ring by pushing it around the regulator screw with my thumb. The regulator screw does not have any sharp edges, my finger has oil on. I don't touch the O-ring with fingernail.

I already broke 2 of same O-ring (0725) out of 2 set of O-ring.
It just pop and torn.
They just don't expand much at all and only sold by the whole set.
Now, I am left with 1 new set, 2 sets of O-rings without the O-rings for regulator screw.

What should I do?


thanks,