Tank Plugs/Seals/Grommets?

[jivefly]

I'm looking for something to use to seal CE2's into a tank mod. I've got 10ft of 3/8" OD 5/8" ID polycarbonate tubing and for the life of me cannot find anything usable to seal these things with. If you've already got a lathe for other things that you need it for, that's great that you can turn blank rods of acetal, but buying a lathe just to make end caps or plugs isn't a route I'm willing to go.

From what I've gathered, it needs to be acetal/delrin, acrylic, or even certain silicone types. Maybe even stainless with a seal? At any rate, if anyone has a source for this, please feel free to help me out here.

Thanks in advance.

 

[DaveP]

All the seals used in the CE2 are silicone. Maybe you could Google for silicone seals/washers and find some.

My search was unsuccessful. I did find plumbing supply houses that sold nylon, but they are hard washers. Looks like its neoprene or nylon most places.

I don't know exactly what you are trying to do, but the CE2 would fit any 510 female thread mounted on the outside of the mod. You could screw the CE2 on and off for a quick change. You are trying to use the CE2 inside the mod?

 

[jivefly]

Yeah, I'm looking for some seals that would work for a 5/8" inside diameter tube. Something like a MAP Tank. I would prefer to use stainless steel plugs with seals that will seat inside of the polycarbonate tubing and seal the CE2 into tank. I've seen some mods like this, but I would imagine people are turning these themselves on a lathe. I will have to ask around the work place if anyone has a lathe to turn some of these plugs.

 

[asdaq]

How about beveled washers like Parallax's http://www.e-cigarette-forum.com/forum/modders-forum/167225-best-3-tank-mod-youll-see-today.html ? His are even 5/8" OD, and the washer will be tight if the hole for the carto is smaller and stretched on. They come in various sizes too.

 

[jivefly]

I think I will go that route until I can find someone with a lathe that can turn some SS caps for me. I found a great polycarbonate tubing supply for a really good price and they ship this stuff to you in a giant reinforced cardboard tube. I see people cutting this stuff with Dremels and leaving nasty marred edges on them, but I just took a cheap pipe-cutter to it and it leaves a perfect edge and perfect cut.

I see a lot of people using only one of these beveled washers, but I think I will use a seal press with a slightly over sized metal washer in between the two plastic washers to heat and mash the two together, leaving a gap around the outside for a double seal on the inside of the tubing. I will post pictures to show what I'm getting at.

These washers seem to be made out of nylon or vinyl. Is this safe for juice? I always thought that juice would leech from those materials.

 

[JuiceJunkie]

Jivefle, Can you post the link for the tubing? Thanks.

 

[Mr.Self_Destruct]

5/8 vinyl grommet works well with an o-ring.

 

[Scubabatdan]

Jivefle, Can you post the link for the tubing? Thanks.

I am sure he got the tubing from here:
McMaster-Carr
That is where I got my 7/8"OD x 3/4"ID polycarbonate tubing, and it came with in a day! In a nice big cardboard shipping tube.
Hope this helps.
Dan

 

[JuiceJunkie]

Thanks Dan Much appreciated! BTW keep up the great work on the mods. I'm inspired

 

[juicefreak]

I'm looking for something to use to seal CE2's into a tank mod. I've got 10ft of 3/8" OD 5/8" ID polycarbonate tubing and for the life of me cannot find anything usable to seal these things with. If you've already got a lathe for other things that you need it for, that's great that you can turn blank rods of acetal, but buying a lathe just to make end caps or plugs isn't a route I'm willing to go.

From what I've gathered, it needs to be acetal/delrin, acrylic, or even certain silicone types. Maybe even stainless with a seal? At any rate, if anyone has a source for this, please feel free to help me out here.

Thanks in advance.

jivefly, i got white delrin rods (food grade) from here:

DELRIN® ROD from Aircraft Spruce

super cheap, fast shipping. delrin is very easy to cut and shape. i think you quoted your dimensions wrong though? 3/8 od - 5/8 id? how is that possible? I have some 5/8 od 3/8" id polycarb tubing, and i can tell you from experience that the OD of a metal CE2 tube is just shy of fitting, which means a 3/8" delrin rod diameter around the CE2 is going to end up like a washer. very thin outer wall. I love the size of the 5/8's tube and am still working on a 'fit' for the ce2 when i have time. map tanks and bottle mods are just too huge for my taste. 5/8 is perfect size and more than enough juice for a day.

 

[strprswpr]

How about this material.....is this safe?
McMaster-Carr
High-temperature flexible grommets are silicone with a temperature range of –60° to +500° F. Color is red-orange. Use indoors and outdoors

Part number 9307K16

 

[Flaklaflubillibu]

How about this material.....is this safe?
McMaster-Carr
High-temperature flexible grommets are silicone with a temperature range of –60° to +500° F. Color is red-orange. Use indoors and outdoors

Part number 9307K16

According to this chemical compatibility guide from Cole-Parmer, Buna-N rubber, which those are made of, gets an A-rating (A=excellent; no softening, loss of strength, or swelling will occur) for both glyerin and propylene glycol. So, I would say probably, and in fact I will be picking up a pack of those, except in 5/8" OD.

 

[JackOnan]

There are two types of material there. The high temp grommets are not made from the Buna-N rubber - some are silicone which should be ok since I believe the original CE2 washers are also silicone. I think some of the silicone ones also have an FDA rating.

 

[Flaklaflubillibu]

Right. I missed that he was also referring to the high temperature silicone in his post. I just went with the part number he posted, which is to a Buna N. The silicone would be nice, but I decided against it because it is orange-red, I wanted black, and they both seem suitable.

 

[santo19586]

these look like they will work for me , just fine

 

[Stosh]

After trying syringe plugs, beveled washers, etc... (I'm also lathe-challanged ) I tried making my own food grade silicone plugs with this : Amazon.com: Environmental Technology 1-Pound Kit Casting' Craft Easymold Silicone Putty: Arts, Crafts & Sewing. It works well, sets up fast, cures semi hard and seals fully. Made a 1/2" top and 3/8" bottom and the seals are perfect. The biggest advantage is an easy and perfect fit for any size tube, syringe body, or bottle I choose to use.