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Anonymous Poster

Hydraulics

02/09/2011 12:39 AM

Could any one tell ..why the o-rings get frequently damaged in hydraulic hoses
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Tornado
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#1

Re: Hydraulics

02/09/2011 2:04 AM

Bad design involving unrelieved angular transitions between surfaces ("sharp edges"); lack of lubrication on assembly; "forcing" things into place when resistance is encountered; wrong selection of O-ring size/thickness; wrong material for particular fluid; inadequate tightening, so that fluid leaks erode the O-ring; things vibrating loose; etc.

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#3
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Re: Hydraulics

02/09/2011 9:43 PM

GA. I hate to be picky but, I have had some O-rings that have failed from heat. Going from buna N to Viton cured early failures. I agree that it may have been incorrect application, but the OEM called for buna-N.

National O-ring;s catalog shows many ways O-rings fail. If the OP is having failures, the catalog is worth reading.

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#2

Re: Hydraulics

02/09/2011 3:44 AM

How are the orings mounted in the hoses you write about ?
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