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-   -   McMaster Keg O-Ring List (http://www.homebrewtalk.com/f11/mcmaster-keg-o-ring-list-233086/)

RScottyL 11-08-2012 12:41 PM

1 Attachment(s)

Can you update the pricing for the o-rings, as it looks like it has changed.

You can now order 50 of the silicone ones instead of 100, which will make it easier on the wallet!




Quote:
Originally Posted by Gremlyn View Post
I decided to rearrange this post to be a little more straight forward with the information. The bulk of the info provided here was copied/edited/paraphrased from a Dec 2010 post on Homebrew Finds - so a big thanks to Chris (724b). Rather than copying the blog post's text, I have pared down to just the relevant details no so this is easier to read at a glance. The links and numbers below are currently for ball lock kegs, but if you have the numbers/links for the o-rings for pin locks please let me know and I will add them to the list.
  • Dip Tube O-rings $1.96/100 - 9452K172
  • Dip Tube O-rings Quad Sealing $4.46/100 - 90025K368 (better seal, less force)
  • Post O-rings Buna-N $2.15/100 - 9452K23 (liquid post)
  • Post O-rings Silicone $10.71/100 - 9396K24 (gas post)
  • Lid O-rings Buna-N $12.69/10 - 9452K218
  • Lid O-rings Silicone $7.88/5 - 9396K926
  • Internal Quick Disconnect O-rings Silicone $6.11/100 - 9396K18 (see notes)

Regarding Buna-N vs Silicone:
Most use Buna-N on the liquid posts because they are cheaper and a liquid leak will be immediately obvoius. Silicone is supposed to seal better, and is generally used for the gas posts. This also has the effect of color coding the posts as Buna-N is black and Silicone is red. Though the keg lid is generally sealing against gas coming out, most use the Buna-N for lid sealing without any problems.

Notes/Additional O-Rings:
I will list extra info and additional o-rings and part numbers here until I have enough to start reorganising it by keg type or similar.
  • The o-ring listed for the Internal QD (9396K18) aren't exactly the same as the standard square sided o-ring that comes in quick disconnects, but the HBF author stated they work well for him and I have found this to be true as well.
  • Dip Tube Silicone o-rings $9.44/100 - 9396K74 (thanks crazyworld)
  • Sanke Keg o-ring $4.67/10 - 9396k215 (thanks dstar26t)
  • barrooze reported that the standard post o-rings for ball locks appear to be a bit small in thickness for use on a pin lock post and he will try using the next thickness up (0.139").

AznDrgn 09-07-2013 01:15 PM

1 Attachment(s)

I just read through all the threads here and I didn't see any mention to replacement o-rings for the pressure relief valve. I've google'd and I see a lot of PRV's advertised as having replaceable o-rings but nobody seems to sell them or even list a size. Does anyone have a size or source for that o-ring? I've attached a picture of the type of PRV that I have, I don't know if there are any different ones.


BcuzIminUT 02-16-2014 01:46 AM

3 Attachment(s)

PIN LOCK POST O-RING SOLVED!!!

Okay, sorry for the yelling above, but I wanted to get your attention. After I switched my gas lines to reinforced lines and beer lines to 3/16” BevSeal (no more beer tasting like water from a garden hose), I developed frequent gas leaks and occasional beer leaks. The reinforced gas lines and BevSeal are much stiffer than the beer/gas lines most use, which caused the fitting to torque and twist. After losing several tanks of CO2, reading this entire post several times and many other posts, I decided to take a hit for the team. Here is what tried:

No. 1. -112 BUNA
No. 2. -112 Silicone
No. 3. 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone
No. 4. 12mm (ID) X 17mm (OD) X 2.5mm (Diameter) Silicone
No. 5. 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone
No. 6. 10mm (ID) X 17mm (OD) X 3.5mm (Diameter) Silicone

I decided to go with 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone for the beer post and 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone for the gas post. The inside diameter of Nos. 1 & 2 were too big. The 2.5mm diameter of No. 4 was too small for the groove, and I did not get a snug connection. The 3.5mm diameter of No. 6 was just too thick to fit in the groove.

No. 3 works well on the beer post; it takes a little stretching, but is nice and snug. No. 5 on the gas post is downright tight and takes a little wiggling to get it off. It may be too tight for some. I did not try 11mm (ID) X 17mm (OD) X 3mm (Diameter) Silicone because I could not find them in small quantities, but it is right between the two and may be just right. I also don’t know how well BUNA would work. It seems less stretchy to me and might make No. 3 too hard to get on the post and No. 5 too hard to get the connector on post. I’ll leave it someone else to try BUNA and 11mm (ID) X 17mm (OD) X 3mm (Diameter) Silicone.

I ordered small quantities on Amazon from here:
http://www.amazon.com/dp/B008MKXQ9M/..._M3T1_ST1_dp_1 (10 pcs. for $3.49 - 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone)
http://www.amazon.com/dp/B008ASY3Y8/...M3T1_ST1_dp_i2 (10 pcs. for $3.47 - 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone)
Larger quantities (and the 11x17x3 in silicone) can be purchased at http://www.oringsandmore.com/.

I welcome others to carry the torch from here and post their results. I’ve also attached a few photos.
No. 5 is on the left, a BUNA -111 (agreed ball lock size) in the middle, and No 3 on the right.


BcuzIminUT 02-16-2014 01:46 AM

3 Attachment(s)

PIN LOCK POST O-RING SOLVED!!!

Okay, sorry for the yelling above, but I wanted to get your attention. After I switched my gas lines to reinforced lines and beer lines to 3/16” BevSeal (no more beer tasting like water from a garden hose), I developed frequent gas leaks and occasional beer leaks. The reinforced gas lines and BevSeal are much stiffer than the beer/gas lines most use, which caused the fitting to torque and twist. After losing several tanks of CO2, reading this entire post several times and many other posts, I decided to take a hit for the team. Here is what tried:

No. 1. -112 BUNA
No. 2. -112 Silicone
No. 3. 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone
No. 4. 12mm (ID) X 17mm (OD) X 2.5mm (Diameter) Silicone
No. 5. 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone
No. 6. 10mm (ID) X 17mm (OD) X 3.5mm (Diameter) Silicone

I decided to go with 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone for the beer post and 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone for the gas post. The inside diameter of Nos. 1 & 2 were too big. The 2.5mm diameter of No. 4 was too small for the groove, and I did not get a snug connection. The 3.5mm diameter of No. 6 was just too thick to fit in the groove.

No. 3 works well on the beer post; it takes a little stretching, but is nice and snug. No. 5 on the gas post is downright tight and takes a little wiggling to get it off. It may be too tight for some. I did not try 11mm (ID) X 17mm (OD) X 3mm (Diameter) Silicone because I could not find them in small quantities, but it is right between the two and may be just right. I also don’t know how well BUNA would work. It seems less stretchy to me and might make No. 3 too hard to get on the post and No. 5 too hard to get the connector on post. I’ll leave it someone else to try BUNA and 11mm (ID) X 17mm (OD) X 3mm (Diameter) Silicone.

I ordered small quantities on Amazon from here:
http://www.amazon.com/dp/B008MKXQ9M/..._M3T1_ST1_dp_1 (10 pcs. for $3.49 - 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone)
http://www.amazon.com/dp/B008ASY3Y8/...M3T1_ST1_dp_i2 (10 pcs. for $3.47 - 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone)
Larger quantities (and the 11x17x3 in silicone) can be purchased at http://www.oringsandmore.com/.

I welcome others to carry the torch from here and post their results. I’ve also attached a few photos.
No. 5 is on the left, a BUNA -111 (agreed ball lock size) in the middle, and No 3 on the right.


BcuzIminUT 02-16-2014 01:46 AM

3 Attachment(s)

PIN LOCK POST O-RING SOLVED!!!

Okay, sorry for the yelling above, but I wanted to get your attention. After I switched my gas lines to reinforced lines and beer lines to 3/16” BevSeal (no more beer tasting like water from a garden hose), I developed frequent gas leaks and occasional beer leaks. The reinforced gas lines and BevSeal are much stiffer than the beer/gas lines most use, which caused the fitting to torque and twist. After losing several tanks of CO2, reading this entire post several times and many other posts, I decided to take a hit for the team. Here is what tried:

No. 1. -112 BUNA
No. 2. -112 Silicone
No. 3. 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone
No. 4. 12mm (ID) X 17mm (OD) X 2.5mm (Diameter) Silicone
No. 5. 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone
No. 6. 10mm (ID) X 17mm (OD) X 3.5mm (Diameter) Silicone

I decided to go with 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone for the beer post and 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone for the gas post. The inside diameter of Nos. 1 & 2 were too big. The 2.5mm diameter of No. 4 was too small for the groove, and I did not get a snug connection. The 3.5mm diameter of No. 6 was just too thick to fit in the groove.

No. 3 works well on the beer post; it takes a little stretching, but is nice and snug. No. 5 on the gas post is downright tight and takes a little wiggling to get it off. It may be too tight for some. I did not try 11mm (ID) X 17mm (OD) X 3mm (Diameter) Silicone because I could not find them in small quantities, but it is right between the two and may be just right. I also don’t know how well BUNA would work. It seems less stretchy to me and might make No. 3 too hard to get on the post and No. 5 too hard to get the connector on post. I’ll leave it someone else to try BUNA and 11mm (ID) X 17mm (OD) X 3mm (Diameter) Silicone.

I ordered small quantities on Amazon from here:
http://www.amazon.com/dp/B008MKXQ9M/..._M3T1_ST1_dp_1 (10 pcs. for $3.49 - 10mm (ID) X 16mm (OD) X 3mm (Diameter) Silicone)
http://www.amazon.com/dp/B008ASY3Y8/...M3T1_ST1_dp_i2 (10 pcs. for $3.47 - 12mm (ID) X 18mm (OD) X 3mm (Diameter) Silicone)
Larger quantities (and the 11x17x3 in silicone) can be purchased at http://www.oringsandmore.com/.

I welcome others to carry the torch from here and post their results. I’ve also attached a few photos.
No. 5 is on the left, a BUNA -111 (agreed ball lock size) in the middle, and No 3 on the right.



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