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  #16  
Old 02-05-2012, 01:03 PM
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Location: Metro Detroit, Michigan
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Hmm

Quote:
Originally Posted by layback40 View Post
I hope they are viton Roy. That way they will last as long as the car.
May be 5X the price but you replace it once & never again.
Down here I would expect to pay about $15 for a viton seal about that size.
I disagree.

If you use the correct fluid + the shaft and bearings are OK, the OE seals are good for several hundred thousand miles.

If the wrong fluid is used other seals will be damaged requiring system flush + rebuild, and the outer seal rubber composition is irrelevant.

If the shaft and bearings are damaged, the outer seal rubber composition is irrelevant.

.
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  #17  
Old 02-05-2012, 05:37 PM
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Quote:
Originally Posted by whunter View Post
I disagree.

If you use the correct fluid + the shaft and bearings are OK, the OE seals are good for several hundred thousand miles.

If the wrong fluid is used other seals will be damaged requiring system flush + rebuild, and the outer seal rubber composition is irrelevant.

If the shaft and bearings are damaged, the outer seal rubber composition is irrelevant.

.

We will agree to disagree.

Heat is the big killer of seals.
Interestingly on some power steering pumps the OE seals are viton. EG VM, & yes it was owned by MB at the time!

I have never had a MB PS pump seal failure though.

Had a few on tractors etc though.
All had correct fluid.
All had signs of heat degradation according to the equipment supplier.
Never had a viton one leak/fail apart from when the bearing next to it collapsed.

I will stick to pink seals over black ones & pay the premium. Same goes for O rings.
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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
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  #18  
Old 02-18-2012, 06:38 PM
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Location: san marcos, Texas
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went to the dealer and bought one. if i'm looking at the correct side of the package, the part number for this part is: A 018 997 60 47

i took this seal to the local bearing supply store and they said it is not a normal seal size. the measurements listed on the seal are: 1B/CC 19.05x33.33x7.93/8.93

the part number on my power steering pump is 116 460 2780

i hope this information helps someone in some way.
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