School me on O-rings

[gba2331]

I bought 2 assortments of o-rings but I can't match them to a Delta faucet. I've found a matching diameter and a matching cross-section, but not the right combination. I have these 2 assortments: Buna-N O-Ring Kit, 70A Durometer, 382 Pieces, 30 Sizes and Metric O Ring Assortment, 32 Universal Sizes.

Is there some other (or multiple) assortments that I should get to cover all of my bases? This kit seems to have other metric O-rings that don't match what I currently have.

Thanks!

 

[PassnThru]

I also have 2 assortments of orings that I picked up one day in the clearance rack at Tractor Supply. I also have tried to use them to repair the pull down sprayer on a Delta faucet. I have had no luck in that regard. Apparently there are an infinite (plus one) number of possible sizes for orings.
Also, the ones I have break easily. Maybe they are old.
I understand that's no help other than to say I feel your pain.

 

[The Cobbler]

the kits are common sizes. there are many sizes of o rings but you'd have to go to an industrial supplier to see what they have in stock.

 

[cvairwerks]

If you know the OD of the old one, there are only about a dozen different ones they used. Simply look up Delta faucet orings and find the match. Even better if you know the model of faucet.

 

[larry_g]

Sometimes it's just easier to get the rebuild kit for the faucet.. There are a near infinite variety of o-ring shapes and materials. A lot or plumbing fixtures are not a simple o-ring.

School yourself here; https://www.parker.com/content/dam/Parker-com/Literature/O-Ring-Division-Literature/ORD-5700.pdf

lg
no neat sig line

 

[hans109h]

This put me to sleep a number of nights earlier this year: https://www.parker.com/content/dam/Parker-com/Literature/O-Ring-Division-Literature/ORD-5700.pdf

If you didn't know, you do now!

Hans

P.s. if you buy Moan, and have a problem and call them up, they will usually just send you what you need.

 

[gba2331]

Thanks all, this,is kinda what I feared….

 

[Jim greengo]

I'd just go to a box store and buy a set of o rings marked for a delta faucet,thet aren't that expensive.

 

[67drake]

I’ve had problems matching o rings and washers for plumbing for at least the last 10 years. I think manufacturers do this on purpose. As said above I usually just buy the rebuild parts from the manufacturer as they aren’t that expensive.

 

[gba2331]

I usually just buy the rebuild parts from the manufacturer as they aren’t that expensive.

Agreed but I never walk out of the store completely sure that I’ve bought the right kit. Having a supply of rings was my answer, or so I had hoped. I guess the final answer is that o-rings aren’t as standardized as bolts.

 

[crane operator]

The sets you bought are more for hydraulic or fuel o-ring replacements, not water faucets. But put them on the shelf and someday they may save you a trip to the store for some unforseen, unknown problem. You'll be a hero.

 

[Notgrownup]

I had the same issue on my Harley fuel disconnect one year. It was a Viton specific size. Took forever to match but finally got it instead of buying the whole hose assemly. Delta does use a proprietary size to make it easy to find for sure.

 

[larry_g]

I guess the final answer is that o-rings aren’t as standardized as bolts.

O-rings come in many standard sizes, just as SAE, JIS, and DIN fasteners do. However there are thousands of fasteners that are not to those standards and unique/proprietary to the device they are on.

Just remember that standards are so important that everyone should have their own....

lg
no neat sig line

 

[nadogail]

O rings, also known as Pre Formed packings are classified by physical size, shape (some have square corners and are known as Quad Rings) and composition. Buna Rubber and Silicone are relatively common.