Recent Topics
WD-40 Trigger Pro
by Merkava_4
03/06/15 01:50 PM
Jeep/Fiat Cherokee 9-Speed trans problematic?
by LoneRanger
03/06/15 01:04 PM
eggs
by whizbyu
03/06/15 12:56 PM
Viscosity
by MolaKule
03/06/15 12:51 PM
Global crude oil glut strains storage options
by LoneRanger
03/06/15 12:49 PM
which conventional or blend
by ram_man
03/06/15 12:29 PM
What filter for a low mileage 2 - 3 year OCI?
by Bamaro
03/06/15 11:34 AM
P1 & Fram use 20 micron but Bosch uses 40 micron?
by Ed_Flecko
03/06/15 11:30 AM
Ulysse Girard Dionne watch
by Char Baby
03/06/15 11:22 AM
Honda snowblower HS929 ..no spark
by Ignatz
03/06/15 10:37 AM
Why Does Mobil conventional have Ti but Not Mobil1
by CrawfishTails
03/06/15 10:16 AM
AAP Valvoline PS Fluid $12.74 per gallon
by dlundblad
03/06/15 10:13 AM
Newest Members
LaMartian, LubricatusObsess, wilrae, Frot, Scoott
53059 Registered Users
Who's Online
104 registered (aa1986, 99Troopers, 2010_FX4, -SyN-, 11 invisible), 1855 Guests and 244 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
53059 Members
66 Forums
227629 Topics
3631921 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3203215 - 12/01/13 06:18 PM WD40 o rings ?
Ndx Offline


Registered: 04/04/08
Posts: 1706
Loc: IL
Hey Guys,

Anytime I have to slide something with o ring I will lube it with WD40
A) it will not migrate like let say vaseline but it will evaporate

WD40 website says safe for rubber
I seen some diy test where orings were not affected after seating for 24hrs

Should I replace orings that I used WD40 on ?
Or not worry about it ?

Top
#3203222 - 12/01/13 06:26 PM Re: WD40 o rings ? [Re: Ndx]
Quattro Pete Offline


Registered: 10/30/02
Posts: 27515
Loc: Great Lakes
If I remember our last discussion on this correctly, according to the manufacturer of WD40, it is safe on o-rings.
_________________________
'02 530i (PU 5W-40)
'15 Q5 3.0T
'13 F700 GS (BMW HP 15W-50)

Top
#3203226 - 12/01/13 06:27 PM Re: WD40 o rings ? [Re: Ndx]
morepwr Offline


Registered: 01/17/12
Posts: 1479
Loc: ventura, ca
Your correct. The WD40 will evaporate off and wont hurt a thing. No worries.

Top
#3203237 - 12/01/13 06:50 PM Re: WD40 o rings ? [Re: Ndx]
DB_Cooper Offline


Registered: 10/01/07
Posts: 278
Loc: Ga
Originally Posted By: Ndx
Hey Guys,

Anytime I have to slide something with o ring I will lube it with WD40
A) it will not migrate like let say vaseline but it will evaporate

WD40 website says safe for rubber
I seen some diy test where orings were not affected after seating for 24hrs

Should I replace orings that I used WD40 on ?
Or not worry about it ?


Don't worry about it...anything is better than nothing and WD-40 is harmless. Personally, I use Vaseline. Vaseline melts at about 100*F and I have not noticed any mess. It disappears very quickly around a hot engine. Never had a seal/lip or "O" ring leak with Vaseline..(knock on wood)

Top
#3203331 - 12/01/13 08:46 PM Re: WD40 o rings ? [Re: Ndx]
eljefino Online   content


Registered: 06/15/03
Posts: 25483
Loc: ME
I've used motor oil on gas line fittings and the appropriate fluid (PS, ATF, etc) on everything else.

Probably too little to make any difference.

Top
#3203336 - 12/01/13 08:49 PM Re: WD40 o rings ? [Re: Ndx]
Donald Online   content


Registered: 03/21/04
Posts: 14327
Loc: Upstate NY
O-rings are normally made of neoprene rather than rubber. Personally I would use a silicone based grease like Sil-glyde.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#3203347 - 12/01/13 08:57 PM Re: WD40 o rings ? [Re: Ndx]
Ndx Offline


Registered: 04/04/08
Posts: 1706
Loc: IL
Thx, should I replace them then ?

According to WD40,neoprene is not affected by it...

For all variations : WD-40 demonstrates none to negligible deleterious effect to plastic, rubber, and metal hard surfaces. This includes Acetal, neoprene/hard rubber, HDPE, PPS Copolymer Polysulfone, Teflon, Viton, steel, galvanized steel hot dip, electroplated, copper, brass, magnesium, nickel, tin plate, titanium, and zinc

According to msd there are some rubbers that will swell after prolonged exposure... Orings are pretty tight sealing stuff so I wonder if it will evaporate or because its tight its just gonna sit there ?


Edited by Ndx (12/01/13 09:06 PM)

Top
#3220447 - 12/18/13 09:30 AM Re: WD40 o rings ? [Re: Ndx]
buck91 Offline


Registered: 04/17/12
Posts: 699
Loc: West Michigan
Is wd40 still Stoddard solvent, mineral oil and an evaporative carrier?
_________________________
2011 F150 4x4 5.0L
1980 Yamaha XS850G

Top