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  • 2005 - 2014 S-197 Mustang -General/Talk-

What is this silver part called?

  • Thread starter Thread starter Trent_97
  • Start date Start date Aug 4, 2019
T

Trent_97

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Dec 17, 2016
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#1
  • Aug 4, 2019
  • #1
I am also needing the o-ring that sits on this plug, but when I bought black ones I guess they weren't the right ones because they melt when they get hot?
 

don ruggles

15 Year Member
Jan 11, 2013
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Aug 5, 2019
#2
  • Aug 5, 2019
  • #2
Center of pic is thermostat housing. Nice it's not plastic.
 
T

Trent_97

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Dec 17, 2016
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Aug 5, 2019
#3
  • Aug 5, 2019
  • #3
don ruggles said:
Center of pic is thermostat housing. Nice it's not plastic.
Click to expand...
It's not my thermostat I have a 2006 Mustang GT my thermostat sits in front of the motor
 

don ruggles

15 Year Member
Jan 11, 2013
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#4
  • Aug 5, 2019
  • #4
Yes,sorry!
 

nickyb

I gotta say i never painted my nuts, Never Ever
15 Year Member
Apr 3, 2009
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nevada
Aug 5, 2019
#5
  • Aug 5, 2019
  • #5
Looks to me like the plug to get all the air out of cooling system,you know to burp the system,and if so the o ring probably needs to be compatable.try rockauto,look for Ford part number.good luck.
 

Hoytster

I don't dare do that to my Knob
20+ Year Stangneter
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Aug 6, 2019
#6
  • Aug 6, 2019
  • #6
Yes, that is the bleed plug for the coolant system on the coolant crossover pipe. Make sure you are using the correct o-ring material and size for an ethylene glycol based system (though any rubber based o-ring should be fine really). Are you sure the o-ring isn't getting chewed up when you are installing it?

Stole this from a BMW site awhile back. This is a chemical compatibility chart for o-ring materials and ethylene glycol based coolants. Anything with a 4 beside it the most chemically compatible. The guy that posted this said he has had the best luck with Teflon coated silicone or silicone O-rings since they are the toughest.


O-Ring Materials Compatible with Ethylene Glycol
(select a material to show its compatible chemicals)
Aflas (4)Buna-N (Nitrile) (4)Butyl (4)
Chemraz (4)Epichlorohydrin (4)Ethylene-Propylene (4)
Fluorocarbon (4)Fluorosilicone (4)Hypalon (4)
Kalrez (4)Natural Rubber (4)Neoprene (4)
Nitrile, Hydrogenated (4)Polyacrylate (1)Polysulfide (2)
Polyurethane, Cast (4)Polyurethane, Millable (3)Silicone (4)
Styrene Butadiene (4)Teflon, Virgin (4)Vamac (4)
 
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Trent_97

New Member
Dec 17, 2016
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Aug 10, 2019
#7
  • Aug 10, 2019
  • #7
Hoytster said:
Yes, that is the bleed plug for the coolant system on the coolant crossover pipe. Make sure you are using the correct o-ring material and size for an ethylene glycol based system (though any rubber based o-ring should be fine really). Are you sure the o-ring isn't getting chewed up when you are installing it?

Stole this from a BMW site awhile back. This is a chemical compatibility chart for o-ring materials and ethylene glycol based coolants. Anything with a 4 beside it the most chemically compatible. The guy that posted this said he has had the best luck with Teflon coated silicone or silicone O-rings since they are the toughest.


O-Ring Materials Compatible with Ethylene Glycol
(select a material to show its compatible chemicals)
Aflas (4)Buna-N (Nitrile) (4)Butyl (4)
Chemraz (4)Epichlorohydrin (4)Ethylene-Propylene (4)
Fluorocarbon (4)Fluorosilicone (4)Hypalon (4)
Kalrez (4)Natural Rubber (4)Neoprene (4)
Nitrile, Hydrogenated (4)Polyacrylate (1)Polysulfide (2)
Polyurethane, Cast (4)Polyurethane, Millable (3)Silicone (4)
Styrene Butadiene (4)Teflon, Virgin (4)Vamac (4)
Click to expand...
Thank you so much! I've looked online and literally couldn't find anything on this. My local part stores don't even sell any high temp o rings so I'll order online.
 

Hoytster

I don't dare do that to my Knob
20+ Year Stangneter
Dec 30, 2002
1,069
700
164
Cornwall, PA
Aug 11, 2019
#8
  • Aug 11, 2019
  • #8
Trent_97 said:
Thank you so much! I've looked online and literally couldn't find anything on this. My local part stores don't even sell any high temp o rings so I'll order online.
Click to expand...


No problem. If you can't find a coated one, just put some silicon lube on the rubber o-ring you get before you install it and that should help protect it from getting chewed up while installing. Good luck!
 
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