HFCM drain plug o-ring size ''PLEASE''
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New User
Joined: Jul 2007
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HFCM drain plug o-ring size ''PLEASE''
Can somebody please tell me what size o-ring is needed for the brass updated drain plug. mine has gotten chewed up and is now leaking when truck is turned off. Went to dealer but as usual was given the wrong size. Thanks.
Fleet Owner
Joined: Nov 2003
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Buna #111 : o-ring for HFCM drain plug (OEM and upgrade)
http://www.grainger.com/Grainger/ORing-1KEZ8
http://www.grainger.com/Grainger/ORing-1KEZ8
Fleet Owner
Joined: Nov 2003
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If you want to upgrade to viton:
2003.5-2007 Ford F250 F350 Powerstroke 6.0L Turbo Diesel HFCM Water Separator Drain Plug Upgrade
2003.5-2007 Ford F250 F350 Powerstroke 6.0L Turbo Diesel HFCM Water Separator Drain Plug Upgrade
Elder User
Joined: Apr 2012
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If you want to upgrade to viton:
2003.5-2007 Ford F250 F350 Powerstroke 6.0L Turbo Diesel HFCM Water Separator Drain Plug Upgrade
2003.5-2007 Ford F250 F350 Powerstroke 6.0L Turbo Diesel HFCM Water Separator Drain Plug Upgrade
viton o rings.
Logistics Pro
Joined: Mar 2007
Posts: 4,604
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From: Claremore, OK
Resurrecting an old thread.....
Somehow I've managed to nick the o-ring on my HFCM drain plug (LCF upgrade style)...of course it starts leaking after I filled the tank ALL the way up.
Do both styles of water drain plugs use the same o-ring? I emailed Clay at RiffRaff, but he wasn't sure of the exact part number. I'm trying to source a replacement locally since I don't think it's worth the postage or merchants electronic sales fees to order this o-ring from across the country. That viton link is dead by the way...I know, that's what I get for using an old thread. 
Somehow I've managed to nick the o-ring on my HFCM drain plug (LCF upgrade style)...of course it starts leaking after I filled the tank ALL the way up.
Do both styles of water drain plugs use the same o-ring? I emailed Clay at RiffRaff, but he wasn't sure of the exact part number. I'm trying to source a replacement locally since I don't think it's worth the postage or merchants electronic sales fees to order this o-ring from across the country. That viton link is dead by the way...I know, that's what I get for using an old thread.
Hotshot
Joined: Dec 2014
Posts: 17,829
Likes: 3,114
From: Jersey Shore
The o-ring size is a Dash 111 and the best local alternative would be a hydraulics and bearing store, although some commercial auto parts stores carry assortments. As an alternative to Grainger where you need an account, McMaster is a good source with alternative materials and square cut if someone wants to try them. The Viton is a more abrasive resistent material.
Logistics Pro
Joined: Mar 2007
Posts: 4,604
Likes: 4
From: Claremore, OK
The o-ring size is a Dash 111 and the best local alternative would be a hydraulics and bearing store, although some commercial auto parts stores carry assortments. As an alternative to Grainger where you need an account, McMaster is a good source with alternative materials and square cut if someone wants to try them. The Viton is a more abrasive resistent material.
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Hotshot
Joined: Dec 2014
Posts: 17,829
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From: Jersey Shore
I never compared them but since they fit the same port my good guess would be ..... Yes.
And I was trying to add to earlier comments of suppliers for searches.
And I was trying to add to earlier comments of suppliers for searches.
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Fleet Owner
Joined: Nov 2003
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The stock plug o-ring will definitely work on the updated plug.
Mountain Pass
Joined: May 2012
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Good call, that's what I'm talkin' about!
Logistics Pro
Joined: Mar 2007
Posts: 4,604
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From: Claremore, OK
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