O-ring material?
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From: Kent WA
O-ring material?
Since the injector O-rings rubber has such a tendancy to harden, get brittle, start to leak, etc, has anyone looked into getting o-rings made out of a better material?
I'm thinking something along the lines of silicone rubber. It is much more heat resistant than butyl rubber, and IIRC it holds up well to petroleum-based liquids.
I'm thinking something along the lines of silicone rubber. It is much more heat resistant than butyl rubber, and IIRC it holds up well to petroleum-based liquids.
Post Fiend
Joined: Nov 2004
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From: Manitoba
This was posted many moons back on another page.......
So far my research (that means looking at one that I took off and measuring it against the supply house stock) the injector orings for my 7.3 are a -111 (7/16 ID /x 5/8 OD X 3/32 long). I have replaced the existing ones in place with new ones from a dealer
The ones I have put on are a viton compound. They seem to be too hard for the temperatures here. When they sit all night, one develops an air leak. I am going to replace them with a nitrile compound tonight. Good thing about knowing the engineering description (dash number) is that you can buy them from a bearing/oring supply house in several compounds for 1/6th the price of the Ford products. Same o'ring, just no overhead.
I hope that this helps anyone looking for replacement o'rings and not wanting to go to Ford for them. $.20 Versus $1.38 each....
Injector return cap O-rings E6TZ-9229-AA
So far my research (that means looking at one that I took off and measuring it against the supply house stock) the injector orings for my 7.3 are a -111 (7/16 ID /x 5/8 OD X 3/32 long). I have replaced the existing ones in place with new ones from a dealer
The ones I have put on are a viton compound. They seem to be too hard for the temperatures here. When they sit all night, one develops an air leak. I am going to replace them with a nitrile compound tonight. Good thing about knowing the engineering description (dash number) is that you can buy them from a bearing/oring supply house in several compounds for 1/6th the price of the Ford products. Same o'ring, just no overhead.
I hope that this helps anyone looking for replacement o'rings and not wanting to go to Ford for them. $.20 Versus $1.38 each....
Injector return cap O-rings E6TZ-9229-AA
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Posting Guru
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From: Kent WA
Originally Posted by PLC7.3
This was posted many moons back on another page.......
So far my research (that means looking at one that I took off and measuring it against the supply house stock) the injector orings for my 7.3 are a -111 (7/16 ID /x 5/8 OD X 3/32 long). I have replaced the existing ones in place with new ones from a dealer
The ones I have put on are a viton compound. They seem to be too hard for the temperatures here. When they sit all night, one develops an air leak. I am going to replace them with a nitrile compound tonight. Good thing about knowing the engineering description (dash number) is that you can buy them from a bearing/oring supply house in several compounds for 1/6th the price of the Ford products. Same o'ring, just no overhead.
I hope that this helps anyone looking for replacement o'rings and not wanting to go to Ford for them. $.20 Versus $1.38 each....
Injector return cap O-rings E6TZ-9229-AA
So far my research (that means looking at one that I took off and measuring it against the supply house stock) the injector orings for my 7.3 are a -111 (7/16 ID /x 5/8 OD X 3/32 long). I have replaced the existing ones in place with new ones from a dealer
The ones I have put on are a viton compound. They seem to be too hard for the temperatures here. When they sit all night, one develops an air leak. I am going to replace them with a nitrile compound tonight. Good thing about knowing the engineering description (dash number) is that you can buy them from a bearing/oring supply house in several compounds for 1/6th the price of the Ford products. Same o'ring, just no overhead.
I hope that this helps anyone looking for replacement o'rings and not wanting to go to Ford for them. $.20 Versus $1.38 each....
Injector return cap O-rings E6TZ-9229-AA
Let us know how it works out either way.
Posting Guru
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From: Monroe, WA
Viton is that orange/brown colored rubber you see on seals and needle valves. Pretty tough stuff.
We ordered a bunch of O-rings a while back from a supply house that just happened to call us one day. He sold us a huge bag of 111 rings for pretty cheap. He even sampled us some heavier rings that I tried on my own truck. They went on pretty hard, time will tell how long they last. I was worried about them spliting the plastic caps, but no leaks yet. I think it's been a couple years. He said the normal 111s were 70 series? The ones he gave me to try were 90 series. Not sure where to get 'em locally.
We ordered a bunch of O-rings a while back from a supply house that just happened to call us one day. He sold us a huge bag of 111 rings for pretty cheap. He even sampled us some heavier rings that I tried on my own truck. They went on pretty hard, time will tell how long they last. I was worried about them spliting the plastic caps, but no leaks yet. I think it's been a couple years. He said the normal 111s were 70 series? The ones he gave me to try were 90 series. Not sure where to get 'em locally.
Post Fiend
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From: Manitoba
Viton® is a synthetic rubber and fluoropolymer elastomer commonly used in o-rings and other moulded or extruded goods. It is a trademark of DuPont Dow Elastomers L.L.C.
http://www.pspglobal.com/pictures-of-colorado.html
http://www.pspglobal.com/pictures-of-colorado.html
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From: Near the ocean
o-ring material
So what you are all saying is the nitrile compound is the best? Is this part #E6TZ-9229-AA the nitrile compound or something else and do I get this at Ford or at a o-ring supply house? I live in HOT climate. Don't worry about cold. I am having trouble with air in system probably around the filter and injector pump so I have been paying close attention to your posts concerning air getting into return lines. I have however been a little foggy as to your plugging the line on the filter. Is there some kind of check valve that can leak air into system? Any help with this problem will be GREATLY appreciated.
93 F-250 7.3 Banks Sidewinder (turbo,exhaust,etc.) E-40D
93 F-250 7.3 Banks Sidewinder (turbo,exhaust,etc.) E-40D
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From: Kent WA
Originally Posted by PLC7.3
Viton® is a synthetic rubber and fluoropolymer elastomer commonly used in o-rings and other moulded or extruded goods. It is a trademark of DuPont Dow Elastomers L.L.C.
http://www.pspglobal.com/pictures-of-colorado.html
http://www.pspglobal.com/pictures-of-colorado.html
Last edited by CheaperJeeper; Oct 1, 2006 at 01:30 AM.
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Fleet Mechanic
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From: Ladner, British Columbia
Viton has been a very common sealing material in the Refining and Oil and Gas Industy for years.
Many folks who has started running there trucks on Biodiesel recommend viton over the Ford stock O-rings. Personnally I have run Biodiesel (B40) for about six month and have not seen a need to switch yet.
If you got the opportunity to upgrade now would probably be a good time. With the fuel industry moving the way it is all diesel fuels may be required by law to contain a small amount of Biodiesel (5-15%) in a few years to raise its Cetane value and get lower emissions.
Seb....
Many folks who has started running there trucks on Biodiesel recommend viton over the Ford stock O-rings. Personnally I have run Biodiesel (B40) for about six month and have not seen a need to switch yet.
If you got the opportunity to upgrade now would probably be a good time. With the fuel industry moving the way it is all diesel fuels may be required by law to contain a small amount of Biodiesel (5-15%) in a few years to raise its Cetane value and get lower emissions.
Seb....
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From: Near the ocean
o-ring material
Thanks for the info. I was planning on changing them now because of air in the fuel system, but thanks to all of you and your suggestions, I was able to cure the problem by plugging the line from the filter to the injector. Thank you ALL very much. I was ready to take it to a mechanic to fix the problem. "KA-CHING" This is a great forum. I'm glad I found it and am part of it.
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www.marcorubber.com
this web site has a material comp.page of almost all modern o rings (what they are made of temp extrems,what the withstand and wont ,psi.ect) good site for ref info on o rings
this web site has a material comp.page of almost all modern o rings (what they are made of temp extrems,what the withstand and wont ,psi.ect) good site for ref info on o rings
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