Thanks everyone .... I'll give them all a try. The problem so far has been this o-ring is actually the thinnist I've ever seen. It is much smaller than a #60 which is 1/8 id X 1/4 od. The original looks to be about 3/32 X 1/8. In other words, the wall thickness is only about 1/32. My temporary solution has been to use a very small diameter (5/32 od) fuel tubing and slice a circle (takes a few tries) off the end.