O-Ring Savvy - Scuba Tech Tips: S13E13
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- เผยแพร่เมื่อ 7 ก.พ. 2025
- Divers probably don't realize that scuba gear uses more o-rings than any other sport. Alec explains how o-rings seal, why they extrude, proper tools and a save-a-dive tip.
Watch my "Alec Peirce at the Ranch" for ranch and home ideas. / @alecpeirceattheranch
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Awesome info Alec! O rings are not given the credit they deserve,an amazing invention,thanks
Thanks Pete.
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After 30 years diving, I always learn something new from you.
Thanks for sharing, don't stop!
👍😁🇬🇧
Me too! Never stop learning.A
What a master you are..... if you had a $ for every o ring you have changed/serviced you would be up there on the top ten rich list..... !!!!!! But look at all the lovely places you have dived...(and perhaps the top ten may never have had a regulator in there mouth!! ) keep up the fantastic work and thanks again for another A++++ Tech tip ;-)
Much appreciate your watching.
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Sir Alec… Lord of the “O”Rings
Ha that’s good, thanks.
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Very grateful for that knowledge, Alec! Thanks for the education and entertainment!
Welcome Scott.
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Good job explaining O-rings
Thank you Nick.
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thats why i love this channel
Thanks for watching.
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Thank you Sir ! Keep up the great work 👍 my favorite dive instructor !!!! You too Kevin !!!!
You are welcome and Kevin reads all comments so he knows his work is appreciated too.
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Very interesting Alec, thanks fot the explanation
Glad though liked it.
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very good explanation of the function of an Oring.
these are fantastic devices that are universally used in industry, even in the rocket boosters to make the joint between the sections of the booster tubes.
Space is not my expertise but I have an experience in designing tooling hyrdraulics where pressures over 10,000 PSI are not uncommon, we use intensively oring for sealing that pressure.
A fact is that sealing at pressure is easier to control that the sealing at zero pressure and most of the problem encountered is oil seeping when the equipment is at rest.
very good topic that is not covered in a generic diving certification.( to my opinion, the basic knowledge of the equipment used by a diver should be an integral part of the certification. )
very good video.
Brother-Diver Jacques, 100% agree with your opinion that this should be included in all basic-certificaton training phases. Earlier you mentioned your design background in tooling-hydraulics, + potential pressures over 10,000 PSI ? < Now THAT is what we'd all call some SERIOUS high-pressure parameters!
@@martinbachmann6283 on many applications using common equipments as ENERPAC, BLACKHAWK, OTC and many similar are based on 10, 000PSI systems, even the cheapo bottle jack uses pressures in that range.
When working in high pressure hydraulics, the tolerances on the Oring grooves, finish and back up rings are crictical Often, we use urethane Orings where the cycling is important as an automatic clamping system
Thanks Jacques and for sharing your experiences. Very interesting they work at such super high pressures.
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Perfect timing. I went this long weekend for first dive of ‘22 and had 2 leaks. One with BC inflator hose and one at tank. Both “O” ring issues. Had to cut dive early, but got in some time before issues. Of course it was 47 degrees F at 27 feet. The guys came back and reported 42 degrees at depth 38 feet ❄️
Glad it helped Paul. That’s a cold dive!A
Great tips once again my friend.
Stay healthy and safe
Thanks
Will
I will thanks Will.
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I never noticed that about the feathering. Loved the tip!
Thanks for watching sir.
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Great information-heading out for dive this weekend.
Safe diving and hope you get to share your great knowledge with others.
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The joys of enjoying scuba and tolerating plumbing as a career.
Ha I guess we do both.
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Another great video, Alex. Question: Do you recommend lubing the spool O-rings on an SPG? If so, with what?
Brother-Diver Alec, I have same question as Brother-Diver Dan, & I would be lubricating Spool o-rings with TRILUBE-71..... SPARINGLY that is. Oh, and as usual, AWESOME instructional-video as well - you are indeed known as the "GREAT-Teacher!"
Only if the maker recommends it or it helps put it into position.
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Hi Alec. What is the point to lubricate the O-ring if all it does is to seal ? Does brass material last a long time in salt water, are they tough ?
The "lubricant" keeps the rubber/silicone/etc from drying out.
Brass is corrosion resistant, also adds to sealing well. Brass fitting (in general) will flex into a shape the fits better, giving a tighter seal.
@@Caderic that makes a lot of sense. Thank you
Lub is only needed for dynamic o-rings that move or to help move it into place, like a tank valve o-ring. Otherwise no lub is need unless the maker recommends it. In some cases lub can aid in extrusion or feathering.
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Thanks Alec, learned some more about o-rings, especially the tools. Which brand are those tools you were showing/using?
Don’t know the brand, borrowed them from Chris’s workshop!
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Why is brass the metal of choice for regulators, tank valves, etc?
I think is because they don’t really corrode in salt water
for th ease of machining and the corrosion resistance. the weakness of stainless is that when it is in presence of chlorine ions, it have a tendency to corrode,
just place a piece of 3 series stainless in the presence of an sample of pool chlorine ( puck or granulated ) and leave it alone for 3 months, you'll find the stainless piece as rusted as about any steel.
Resistance to corrosion first and easy to work. Ever wonder why brass port holes from hundred year old wrecks still look so good?
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A standard K valve O-ring that seats up against the 1st stage regulator is a different O ring than what goes onto a pro valve to seat up against the 1st stage. Correct?
the size is different but the sealing pronciple is the same.
If you mean the tank valve o-ring against the tank, yes different size, same purpose.
Do you have a video on sizing o rings
I have done several on o-rings and mention sizing. Search TH-cam for Alec Peirce Scuba o-ring, to see all videos.
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🇬🇧🏴👌
Thank you.
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