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#4618629 - 12/30/17 09:49 AM A/C and Heater Hose O Ring Lube
Fitz98 Offline


Registered: 03/17/11
Posts: 318
Loc: Florida
I have a 98 Expedition that I just replaced heater core.
Heater core was bypassed because of leak.
I have a couple of older factory hose sections with quick disconnect ends.
What would I lubricate the O rings with when installing the quick connects?
Something available from my home or local parts store.

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#4618637 - 12/30/17 09:57 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
bullwinkle Offline


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
Why not a little Vaseline or similar? I usually use ice cream machine food grade lube, because I have a fair amount of it around.
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#4618638 - 12/30/17 09:57 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
double vanos Offline


Registered: 08/05/04
Posts: 1887
Loc: 5600 feet elevation, Arizona
Straight coolant might get it done.
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#4618658 - 12/30/17 10:12 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Chris142 Offline


Registered: 06/05/03
Posts: 16835
Loc: Deplorable in apple valley, ca
Any light oil. Just a smear.
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#4618690 - 12/30/17 10:36 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Linctex Offline


Registered: 12/31/16
Posts: 6160
Loc: Waco, TX
Vaseline or wheel bearing grease.
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#4618831 - 12/30/17 01:13 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
NibbanaBanana Offline


Registered: 05/23/16
Posts: 292
Loc: New England
Silicon grease.
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#4618842 - 12/30/17 01:25 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Trav Offline


Registered: 11/20/06
Posts: 18900
Loc: MA, Mittelfranken.de
On quick connects I usually us Nylog blue because I have it around but silicone grease or as someone said just plain coolant works fine too.
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#4618863 - 12/30/17 01:54 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Lubener Offline


Registered: 01/22/11
Posts: 2577
Loc: N.Ohio
I just smear some coolant on them if you don't have some silicon grease.. You just want them to slide in place and not twist as you insert them.I wouldn't buy anything special.
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#4623241 - 01/03/18 10:24 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
andyd Offline


Registered: 09/25/04
Posts: 7158
Loc: Marshfield , MA
green anti-freeze, even when cut 50%, is pretty darn slippery.
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#4624817 - 01/05/18 11:13 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Fred_Garvin Offline


Registered: 08/22/13
Posts: 46
Loc: Upstate NY
Water, anti-freez, a mix, dish soap, spit, anything but a petroleum product. [censored] an oldtimers trick was to use brake fluid on the hoses. Make nice n slippery then when dried it sealed em up so they had to be cut off.

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#4682489 - 03/02/18 04:37 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
slomo Offline


Registered: 08/23/13
Posts: 164
Loc: Oklahoma
Magic Lube is what you are seeking. 100% silicone grease and super tacky. Great for other around the house plumbing tasks and O-ring lubing. Get it at your local swimming pool supply. Will not eat O-rings.

slomo

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