O rings installation tool

[charlie99]

Hello all. What tools or gadgets do you guys use to install these very tiny o rings such as for regulators. I had to replace some o ring in a regulator about a year ago and those damn things are a pain. I got it on eventually after tearing up two and its all good now. So just wondering if you guys use anything that would make replacing these tiny o rings easier.

 

[Healthservices]

did you heat the pen tube?

Yes, depending on what I needed I use heat on the tube, on another I heated, shaped, and expanded with a pick. I had to disect a lot of pens as many pens use different thickness and diameters. Some even used metal tubes

Allen

 

[Ricklin]

Wouldn't something like this work cut to fit?
View attachment 503747

Or these:
View attachment 503756

Best post of the thread IMO. Great catch on using the tapered spout pictured above, they come in loads of different sizes and we can cut them as needed. Flat awesome and free.

 

[WobblyHand]

I think Captain O-rings has glass filled nylon tools and maybe some brass ones. Witches hat expanders are great as well. Wished I had thought about using a plastic tip.

I machined a taper from 4mm to 7mm to install some o-rings on a GK1 probe. The original o-rings are NBR80, but they are hard to find, so I used NBR90 o-rings. The 90's are a bear to stretch, even with the taper. NBR70 isn't recommended for GK1 probes, at least according to Parker O-rings, due to extrusion under pressure and gap.

 

[Ricklin]

The stainless steel witches hat type work best esp. for tiny hard O rings. Do put a light film of Parker Super O-lube on the tool prior to use. Having multiple sizes for the tiny hard o-rings is the ticket.

 

[graycrait]

@Ricklin , I am curious to get a hold of those pierced ears expanders just for the fun of it. They are cheap as a set. Maybe they would work with some mods or not. One time I was trying to think of something to expand the end of a tennis racket grommet and came across BDSM brass studs in a kit of different sizes. Seeing as the tool that had the express purpose of expanding grommets was no longer available the pointy brass/steel collar studs worked Odd where you can find cross purpose tools.

 

[WobblyHand]

The stainless steel witches hat type work best esp. for tiny hard O rings. Do put a light film of Parker Super O-lube on the tool prior to use. Having multiple sizes for the tiny hard o-rings is the ticket.

Didn't have any Super O-lube on hand, but did lube with silicone oil. I machined my witch hat out of 1144, since that was my round stock closest to 7mm (3/8 = 9.5mm). My stainless was 1/2", so I went with the 1144.

 

[SilentSquirrel]

I think Captain O-rings has glass filled nylon tools and maybe some brass ones. Witches hat expanders are great as well. Wished I had thought about using a plastic tip.

I machined a taper from 4mm to 7mm to install some o-rings on a GK1 probe. The original o-rings are NBR80, but they are hard to find, so I used NBR90 o-rings. The 90's are a bear to stretch, even with the taper. NBR70 isn't recommended for GK1 probes, at least according to Parker O-rings, due to extrusion under pressure and gap.

@WobblyHand
The O-Ring Store has Aflas Duro 80 Orings.
According to the site Aflas is also called Viton
Here is a link to the page

Aflas O-rings -We make getting o-rings easy!

Aflas O-Rings available online at The O-ring Store, you can find and buy a huge selection of Aflas O-Rings, seals, o-ring kits and accessories. We make getting o-rings easy!

www.theoringstore.com

Hope this helps
Edward