If you need the off-size O-ring...

[Brian Tymchak]

Just a quick FYI in case you find yourself needing a harder-to-find O-ring, I found "The O-Ring Store" (http://www.theoringstore.com/) online. Unlike some other online o-ring stores I checked out, you can order just 1 o-ring if you need to, and they will ship USPS for $5. Other places I looked at required minimum orders of $15 or 25 O-rings, and some stores only shipped UPS Ground for $10. The first place I looked, I was going to have to spend $18 due to minimum orders and shipping. At the O-ring store, I paid $8.30 for 5 O-rings (I only needed 1, but figured a few spares would handy.) Also cheaper than driving across town, >IF< I had been able to find anyone locally with the size I needed. Had the O-rings in hand in 3 days.

[Stephen Tashiro]

It's interesting that the site also sells O-ring splice kits. I wonder how that process works.

[Myk Rian]

It's interesting that the site also sells O-ring splice kits. I wonder how that process works.
You use straight O-ring material, a cutting jig for a razor blade, and the vulcanizing cement. Doesn't work too well if there will be pulling tension on the O-ring.

[Rich Stewart]

Even when I have the original o-ring with me I have never been able to match it up with a new one. I have bought entire faucets because I couldn't find the correct size. How many sizes of o-rings are there?

[Myk Rian]

3,095,002 at last count.

[Brian Tymchak]

3,095,002 at last count.

... and then each of those are available in 8 different materials for different liquids and temperature ranges.

Rich, there are O-rings in so many things these days.. Here's the size chart (http://www.theoringstore.com/index.php?main_page=page&id=3)from the O-Ring store. I needed one that was 2.25" x .1" to fit one of the jets in my hot tub. The thickness was critical to fit the width of the recess in the jet housing. turns out that is actually a standard size o-ring - a "-140"..

[Bill Cunningham]

You use straight O-ring material, a cutting jig for a razor blade, and the vulcanizing cement. Doesn't work too well if there will be pulling tension on the O-ring.

Usually it includes a adh. like crazy glue.. I've used these kits to make 1/4" material o-rings 3 inches in diameter for use in valving large high pressure air cylinders up to 5000 psi

[kevin burns]

You can research o-rings (http://www.parcoinc.com/) at Parcoinc.com, and then buy inexpensive, quality replacements at oringwarehouse.com.