Meg o-ring specs?

ChrisJ · 12th September 2007, 11:42

Hi,
Does anyone have a list of the specifications (sizes, part numbers or something) for the o-rings in the meg. The main one I want to track down now is the info for the o-rings on the breathing hoses going into the head, but if there's a full list around, that would be useful.

Cheers
Chris

York · 12th September 2007, 15:05

If you mean the O-rings that go onto the end of the hoses, the part that gets hand-screwed down onto the Meg head, its a 2-123. Pretty sure it's Buna-N (red).
http://www.parker.com/o-ring/Static/...ize%20list.pdf

hope that helps
Joerg

***jradomski*** · 12th September 2007, 15:21

Quote: (Originally Posted by York)

If you mean the O-rings that go onto the end of the hoses, the part that gets hand-screwed down onto the Meg head, its a 2-123. Pretty sure it's Buna-N (red).
http://www.parker.com/o-ring/Static/...ize%20list.pdf

hope that helps
Joerg

joerg
Red-Orange o-rings are usually Silicone..

York · 12th September 2007, 17:39

Quote: (Originally Posted by jradomski)

joerg
Red-Orange o-rings are usually Silicone..

Joe,
"usually" as in: most of the times, maybe, unless it is different?

You can get pretty much any colour for different materials - haven't seen too many purple O-rings though

The red O-rings for the T-Pieces are definately Buna-N according to the man who makes the rig. But you're right, I don't think the material matters dramatically.

Joerg

***jradomski*** · 12th September 2007, 17:52

Quote: (Originally Posted by York)

Joe,
"usually" as in: most of the times, maybe, unless it is different?

You can get pretty much any colour for different materials - haven't seen too many purple O-rings though

The red O-rings for the T-Pieces are definately Buna-N according to the man who makes the rig. But you're right, I don't think the material matters dramatically.

Joerg

in this case it should not matter.. since they characteristics are pretty similiar for the materials in use.. in fact silicone might even bit a bit better since these are the typical characteristics of silicon o-rings

"excellent ozone, weather, detergent, and salt water resistance. Good high and low temperature resistance"

same shore rating but better temperature range.. both buna-n and silicon have about the same low pressure oxygen compatibility..

**almity1** · 12th September 2007, 22:04

I am going through the motions right now

Trying to get a list together of the O Rings used on the Meg.

From the ANDI Manual I got the following

Silicone -224 for the T fittings 4 off
Silicone -123 for the Hose Ends 4 off
Silicone -218 for the ADV 2 off
Viton -013 for inside the ADV 1 off
Viton -259 for the Lid 2 off
Silicon -042 for the Base/Sensor Pod 1 off
Silicon -037 for the Sensor Pod/Locking Plate 1 off

The one missing from the Manual is

Viton -127 for the Locking Plate 2 off

I had to work that one out for myself

I have confirmed the above with a supplier and ordered a couple of sets

Steve supplied me with an O Ring Kit and I find there are 3 other types. I have asked Steve for more info, but I am leaving him alone while he gets over his unfortunate incident.

They are

1 Black one which is about 4-5 inches wide
2 Small Brown ones about a cm (I am assuming they are the Viton -013 for inside the ADV as per the manual)
4 Very Small ones about 0.5cm

If anyone has a list of what the O Rings are that will be great.

Hoping you can help

Cheers

Theo

***jradomski*** · 12th September 2007, 22:35

Quote: (Originally Posted by York)

If you mean the O-rings that go onto the end of the hoses, the part that gets hand-screwed down onto the Meg head, its a 2-123. Pretty sure it's Buna-N (red).
http://www.parker.com/o-ring/Static/...ize%20list.pdf

hope that helps
Joerg

also when I originally asked Leon if the red orings were silicon he replied yes.. All the o-ring Info I put in the ANDI manual came from asking Leon for the sizes and composition..

The r3ed o-rings on my meg t-pieces definately are not burna n... They are silicone...

**almity1** · 12th September 2007, 23:51

Quote: (Originally Posted by almity1)

Steve supplied me with an O Ring Kit and I find there are 3 other types. I have asked Steve for more info, but I am leaving him alone while he gets over his unfortunate incident.

They are

1 Black one which is about 4-5 inches wide
2 Small Brown ones about a cm (I am assuming they are the Viton -013 for inside the ADV as per the manual)
4 Very Small ones about 0.5cm

****** STOP PRESS *********

Steve just gave me a call

The 4 small ones are for the Handsets, probably never use them
The 2 Small Brown Ones are for the 1st Stages
The Black One is one for the KISS, obviously its one that wants to be used on a Meg.

And as aside......

They found his car

, but he doesn't know in what condition or where the Rebreather is etc.

Wreck detective · 14th September 2007, 03:15

He's just one site for O-ring sizing. Just have a quick measure up and ref: against one of the charts.

-004 thru -050 have a cross section of .070"
-102 thru -178 have a cross section of .103"
-201 thru -284 have a cross section of .139"
-309 thru -395 have a cross section of .210
-425 thru -475 have a cross section of .275"

There is also avalible, several cheap plastic measuring devices avalible for orings.

American Seal, Inc. - Standard O-Ring Sizes and Dimensions

York · 14th September 2007, 10:01

Quote: (Originally Posted by jradomski)

also when I originally asked Leon if the red orings were silicon he replied yes.. All the o-ring Info I put in the ANDI manual came from asking Leon for the sizes and composition..

The r3ed o-rings on my meg t-pieces definately are not burna n... They are silicone...

is this becoming a "but I'm right"-competition ?

I take your word for it - I had a look at my notes from the manufacturer training in 2004, and at the time Leon told us they were Buna-Ns. He also told us that the O-rings for the sensor carriage are silicone. Happy to learn something new.

What is missing in the listing above is the 2-235 for the handset, 2-224 for the battery lid. In my notes I found a bunch of other O-rings that I can't assign at the moment.

J

12th September 2007, 11:42	#1 (permalink)
ChrisJ New Member Current Rebreather/s: Megalodon Other Rebreather/s: Classic Kiss Join Date: Mar 2006 Location: Guildford Posts: 4	Meg o-ring specs? Hi, Does anyone have a list of the specifications (sizes, part numbers or something) for the o-rings in the meg. The main one I want to track down now is the info for the o-rings on the breathing hoses going into the head, but if there's a full list around, that would be useful. Cheers Chris
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12th September 2007, 15:05	#2 (permalink)
York probubbly not Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2005 Location: Bristol, UK Posts: 118	Re: Meg o-ring specs? If you mean the O-rings that go onto the end of the hoses, the part that gets hand-screwed down onto the Meg head, its a 2-123. Pretty sure it's Buna-N (red). http://www.parker.com/o-ring/Static/...ize%20list.pdf hope that helps Joerg
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12th September 2007, 15:21	#3 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,895	Re: Meg o-ring specs? Quote: (Originally Posted by York) If you mean the O-rings that go onto the end of the hoses, the part that gets hand-screwed down onto the Meg head, its a 2-123. Pretty sure it's Buna-N (red). http://www.parker.com/o-ring/Static/...ize%20list.pdf hope that helps Joerg joerg Red-Orange o-rings are usually Silicone.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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12th September 2007, 17:39	#4 (permalink)
York probubbly not Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2005 Location: Bristol, UK Posts: 118	Re: Meg o-ring specs? Quote: (Originally Posted by jradomski) joerg Red-Orange o-rings are usually Silicone.. Joe, "usually" as in: most of the times, maybe, unless it is different? You can get pretty much any colour for different materials - haven't seen too many purple O-rings though The red O-rings for the T-Pieces are definately Buna-N according to the man who makes the rig. But you're right, I don't think the material matters dramatically. Joerg
(Offline)

12th September 2007, 17:52	#5 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,895	Re: Meg o-ring specs? Quote: (Originally Posted by York) Joe, "usually" as in: most of the times, maybe, unless it is different? You can get pretty much any colour for different materials - haven't seen too many purple O-rings though The red O-rings for the T-Pieces are definately Buna-N according to the man who makes the rig. But you're right, I don't think the material matters dramatically. Joerg in this case it should not matter.. since they characteristics are pretty similiar for the materials in use.. in fact silicone might even bit a bit better since these are the typical characteristics of silicon o-rings "excellent ozone, weather, detergent, and salt water resistance. Good high and low temperature resistance" same shore rating but better temperature range.. both buna-n and silicon have about the same low pressure oxygen compatibility.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
(Offline)

12th September 2007, 22:04	#6 (permalink)
almity1 No Viz is BAD Viz Current Rebreather/s: Megalodon Other Rebreather/s: Evolution Prism Topaz Sport Kiss Optima Join Date: Aug 2006 Location: Sydney, Australia Posts: 176	Re: Meg o-ring specs? I am going through the motions right now Trying to get a list together of the O Rings used on the Meg. From the ANDI Manual I got the following Silicone -224 for the T fittings 4 off Silicone -123 for the Hose Ends 4 off Silicone -218 for the ADV 2 off Viton -013 for inside the ADV 1 off Viton -259 for the Lid 2 off Silicon -042 for the Base/Sensor Pod 1 off Silicon -037 for the Sensor Pod/Locking Plate 1 off The one missing from the Manual is Viton -127 for the Locking Plate 2 off I had to work that one out for myself I have confirmed the above with a supplier and ordered a couple of sets Steve supplied me with an O Ring Kit and I find there are 3 other types. I have asked Steve for more info, but I am leaving him alone while he gets over his unfortunate incident. They are 1 Black one which is about 4-5 inches wide 2 Small Brown ones about a cm (I am assuming they are the Viton -013 for inside the ADV as per the manual) 4 Very Small ones about 0.5cm If anyone has a list of what the O Rings are that will be great. Hoping you can help Cheers Theo __________________ Cheers almity1 - http://www.almity1.com
(Offline)

12th September 2007, 22:35	#7 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,895	Re: Meg o-ring specs? Quote: (Originally Posted by York) If you mean the O-rings that go onto the end of the hoses, the part that gets hand-screwed down onto the Meg head, its a 2-123. Pretty sure it's Buna-N (red). http://www.parker.com/o-ring/Static/...ize%20list.pdf hope that helps Joerg also when I originally asked Leon if the red orings were silicon he replied yes.. All the o-ring Info I put in the ANDI manual came from asking Leon for the sizes and composition.. The r3ed o-rings on my meg t-pieces definately are not burna n... They are silicone... __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
(Offline)

12th September 2007, 23:51	#8 (permalink)
almity1 No Viz is BAD Viz Current Rebreather/s: Megalodon Other Rebreather/s: Evolution Prism Topaz Sport Kiss Optima Join Date: Aug 2006 Location: Sydney, Australia Posts: 176	Re: Meg o-ring specs? Quote: (Originally Posted by almity1) Steve supplied me with an O Ring Kit and I find there are 3 other types. I have asked Steve for more info, but I am leaving him alone while he gets over his unfortunate incident. They are 1 Black one which is about 4-5 inches wide 2 Small Brown ones about a cm (I am assuming they are the Viton -013 for inside the ADV as per the manual) 4 Very Small ones about 0.5cm **** STOP PRESS ******* Steve just gave me a call The 4 small ones are for the Handsets, probably never use them The 2 Small Brown Ones are for the 1st Stages The Black One is one for the KISS, obviously its one that wants to be used on a Meg. And as aside...... They found his car , but he doesn't know in what condition or where the Rebreather is etc. __________________ Cheers almity1 - http://www.almity1.com
(Offline)

14th September 2007, 03:15	#9 (permalink)
Wreck detective New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2007 Location: Australia Posts: 10	Re: Meg o-ring specs? He's just one site for O-ring sizing. Just have a quick measure up and ref: against one of the charts. -004 thru -050 have a cross section of .070" -102 thru -178 have a cross section of .103" -201 thru -284 have a cross section of .139" -309 thru -395 have a cross section of .210 -425 thru -475 have a cross section of .275" There is also avalible, several cheap plastic measuring devices avalible for orings. American Seal, Inc. - Standard O-Ring Sizes and Dimensions
(Offline)

14th September 2007, 10:01	#10 (permalink)
York probubbly not Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2005 Location: Bristol, UK Posts: 118	Re: Meg o-ring specs? Quote: (Originally Posted by jradomski) also when I originally asked Leon if the red orings were silicon he replied yes.. All the o-ring Info I put in the ANDI manual came from asking Leon for the sizes and composition.. The r3ed o-rings on my meg t-pieces definately are not burna n... They are silicone... is this becoming a "but I'm right"-competition ? I take your word for it - I had a look at my notes from the manufacturer training in 2004, and at the time Leon told us they were Buna-Ns. He also told us that the O-rings for the sensor carriage are silicone. Happy to learn something new. What is missing in the listing above is the 2-235 for the handset, 2-224 for the battery lid. In my notes I found a bunch of other O-rings that I can't assign at the moment. J
(Offline)

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