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#880048 - 04/13/07 06:51 PM Door rubber gasket care
Quattro Pete Offline


Registered: 10/30/02
Posts: 25277
Loc: Illinoistan
What do you guys recommend? I've seen a post in the archives about rubber treatment, but nothing definitive. The BMW gummipflege was highly regarded in BMW circles, alas BMW replaced it with something else that's 4 times as expensive (and the original stuff wasn't cheap either).

Someone recommended Zymol Seal to me. Wurth and Einszett also have some rubber protection products.

I have the 303 Aerospace Protectant that I use for interior plastics. Not sure if that's a good thing to use for those door/trunk gaskets.

Thanks.
_________________________
'02 530i (PU 5W-40)
'08 C300 4Matic (M1 0W-40)
'13 F700 GS (Spectro 15W-50)

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#880049 - 04/13/07 07:07 PM Re: Door rubber gasket care [Re: Quattro Pete]
benjamming Offline


Registered: 01/03/04
Posts: 5666
Loc: northern Alabama
I am currently using Zymol seal & like it pretty well. I intend on trying the Wurth next. As someone else on here suggested, you might also look into glycerin from the pharmacy.

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#880050 - 04/13/07 07:42 PM Re: Door rubber gasket care [Re: benjamming]
Russell Offline


Registered: 12/04/04
Posts: 2133
Loc: Lexington, KY
I tried Wurth and Einzett. Neither are anything like the original BMW product as they are thin and water like. Wurth is better though.

I have tried syrup like glycerin from teh pharmacy. It seems to work ok. best to wipe it on, let soak in with doors open and then remove the excess as itt does not seem to harden or dry.
_________________________
Russell Casey
1995 BMW 525i M50TU 2.5L-6, abt 233K miles. Rebuilt trany.
1998 Ford Explorer Eddie Bauer 152k miles, 4L-SOHC V6. timing chains replaced

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#880051 - 04/13/07 08:43 PM Re: Door rubber gasket care [Re: Russell]
bretfraz Offline


Registered: 06/21/02
Posts: 2756
Loc: CarMax
There is no definitive answer for rubber seal care. Most any good water based protectant will work, as will 303, Einszett and Wurth products. Stay away from oily or solventy products and you'll be fine.
_________________________
'98 Dodge Ram 1500, PYB 10-30

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#880052 - 04/13/07 09:18 PM Re: Door rubber gasket care [Re: bretfraz]
Colt Offline


Registered: 02/28/05
Posts: 1588
Loc: NJ
EXPENSIVE!!!
I bought a tube years ago.
Last a long,long time.



http://www.ecklers.com/product.asp?pf_id=A2524&dept_id=123



Originally developed for the U.S. Space Program, Krytox® Fluorinated Lubricants are a family of synthetic oils and greases that perform where conventional lubricants fail. They exhibit superior lubricity, high load carrying ability and extra wear protection. Excellent for high temperature and chemically aggressive environments. Available in general purpose, mil-spec, and food grades.

• High Temperature Stability, to 800ºF/426ºC
• Wide Operating Range, -103ºF/-75ºC to 800ºF/426ºC
• Oxygen Compatibility, safe for oxygen service
• Chemical Inertness. Insoluble in hydrocarbons, petroleum distillates,
water, steam, chemical solvents and acids/bases.
• Ionizing Radiation Resistance
• Compatible with plastics, elastomers, metals, ceramics
• Extends Service Life of critical components. Reduces down time and
maintenance costs.
• Low Vapor Pressure
• Low Outgassing
• Nonflammable
• Nontoxic
• No Migration, contains no silicones
• Food Grades (USDA/NSF H-1 & H-2)
• Aerospace Grades
• Mil-Spec Grades


Edited by Colt (04/13/07 09:23 PM)
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'08 Hyundai Elantra Amsoil ALM WIX Filter
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#880053 - 04/14/07 12:11 AM Re: Door rubber gasket care [Re: Colt]
obbop Offline


Registered: 06/24/04
Posts: 2832
Loc: MO
Yak spit.

Or, 303.
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#880054 - 04/15/07 08:45 AM Re: Door rubber gasket care [Re: obbop]
mjfx Offline


Registered: 12/26/06
Posts: 77
Loc: Central FL
303. I cannot stress this enough. 303 works on everything

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#880055 - 04/15/07 08:59 AM Re: Door rubber gasket care [Re: mjfx]
rsylvstr Offline


Registered: 01/01/07
Posts: 1757
Loc: Oneida County, NY
never heard/tried 303.

i spray a rag with silicone and wipe it down after each wash.
_________________________
Rob
2001 F150 SCrew Lariat 4X4 5.4L, 4R70W, LS 9.75" 3.55, 92 Galant 2.0 SOHC, 01 Civic 1.7 VTEC

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#880056 - 04/15/07 03:55 PM Re: Door rubber gasket care [Re: Quattro Pete]
harrydog Offline


Registered: 07/17/03
Posts: 748
Loc: Ohio
Door seals don't really need any conditioner and in fact, some conditioners may do more harm than good. Just keeping them clean is all you really need to do and for this I use 303 protectant. This is based on information from the 303 website which I posted below.


Rubber Seals - Not `Rubber' Anymore
Maybe not a surprise, but no longer are a car's rubber seals made from `rubber'. To keep the inside of your car quiet and dry, car makers use a specialized synthetic material called EPDM, (ethylene propylene diene monomer).

Real rubber, or blends containing real rubber, just cannot endure the direct exposure to sunlight(ultraviolet light) and the harmful-to-rubber oxidizing gases in our atmosphere (see Tech Facts Vol. 1). To quote from the engineering specs, EPDM is "Ideal for outdoor applications because of its excellent resistance to ultraviolet light, ozone, oxidants, and severe weather conditions".

EPDM is great stuff, but it has some downsides. It's tear resistance is only fair, so sticking & tearing is not uncommon. And just like real rubber, it has extremely poor resistance to solvents (petroleum distillates) and oils.

"You mean I don't have to `protect' my car's door & trunk seals?"
That's right, and treating your seals with a leading-brand "protectant" is almost always exactly the WRONG thing to do to your seals. Any chemical product that contains oils or petroleum distillates is incompatible with EPDM.

TIP: NEVER apply any rubber or vinyl treatment that has an oily or greasy nature or contains petroleum distillates. READ THE LABEL! If a product contains petroleum distillates, do not apply it to your rubber seals.

Though its powerful UV screening benefit is not needed in this application, 303 Aerospace Protectant is great for cleaning EPDM seals and to keep them clean. 303 Aerospace Protectant makes EPDM seals look like new and PREVENTS sticking and tearing. Because it is safe for EPDM and prevents sticking & tearing, manufacturers exclusively recommend 303 Aerospace Protectant for this application.

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#880057 - 04/15/07 06:21 PM Re: Door rubber gasket care [Re: harrydog]
Russell Offline


Registered: 12/04/04
Posts: 2133
Loc: Lexington, KY
3003 is great stuff and hard to beat with it's uv protection. However, i have never seen anything like BMW's gummi-pflege product for keeping door gaskets pliable, soft and non-sticking. Shame it is not available.

pure Glycerin comes as close to it as I have found. BTW, even Armor-all original is water based.
_________________________
Russell Casey
1995 BMW 525i M50TU 2.5L-6, abt 233K miles. Rebuilt trany.
1998 Ford Explorer Eddie Bauer 152k miles, 4L-SOHC V6. timing chains replaced

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#880058 - 04/15/07 06:36 PM Re: Door rubber gasket care [Re: Russell]
bretfraz Offline


Registered: 06/21/02
Posts: 2756
Loc: CarMax
Thanks, Harry, for posting those comments from 303. Now y'all know why I said to stay away from solventy and oily products.

Clip & Paste from above:

EPDM is great stuff, but it has some downsides. It's tear resistance is only fair, so sticking & tearing is not uncommon. And just like real rubber, it has extremely poor resistance to solvents (petroleum distillates) and oils.

"You mean I don't have to `protect' my car's door & trunk seals?"
That's right, and treating your seals with a leading-brand "protectant" is almost always exactly the WRONG thing to do to your seals. Any chemical product that contains oils or petroleum distillates is incompatible with EPDM.

TIP: NEVER apply any rubber or vinyl treatment that has an oily or greasy nature or contains petroleum distillates. READ THE LABEL! If a product contains petroleum distillates, do not apply it to your rubber seals.


Edited by bretfraz (04/15/07 06:37 PM)
_________________________
'98 Dodge Ram 1500, PYB 10-30

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#880059 - 04/15/07 07:22 PM Re: Door rubber gasket care [Re: bretfraz]
benjamming Offline


Registered: 01/03/04
Posts: 5666
Loc: northern Alabama
Door seals have been made from EPDM rubber for decades. Glycerol (glycerine) C3H8O3 is very compatible with EPDM & most everything. Maybe this is why it has been used in the past?
303 doesn't list their ingredients except as trade secret on their MSDS. Does anyone know what it contains especially for the UV treatment?

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#880060 - 04/15/07 07:42 PM Re: Door rubber gasket care [Re: benjamming]
rsylvstr Offline


Registered: 01/01/07
Posts: 1757
Loc: Oneida County, NY
i guess silicone is bad
_________________________
Rob
2001 F150 SCrew Lariat 4X4 5.4L, 4R70W, LS 9.75" 3.55, 92 Galant 2.0 SOHC, 01 Civic 1.7 VTEC

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#880061 - 04/15/07 08:03 PM Re: Door rubber gasket care [Re: rsylvstr]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
I ude Black Magic Tire shine stuff on my 92 Toyota p/u the interior vinyl and door trim and gaskets looked great at 14 years.
_________________________
Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#880062 - 04/15/07 08:38 PM Re: Door rubber gasket care [Re: rsylvstr]
bretfraz Offline


Registered: 06/21/02
Posts: 2756
Loc: CarMax
Quote:

i guess silicone is bad




There are over 30,000 formulations for silicone. Not all of them are bad. This thread has given you ways to determine if a silicone product is potentially good or bad for your door seals.
_________________________
'98 Dodge Ram 1500, PYB 10-30

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