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o-rings that seal caliper halves

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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1997 - 2000 V70, V70 AWD
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850oldschool
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o-rings that seal caliper halves

Post by 850oldschool » Sun Mar 08, 2020 1:22 pm

Any sources?

No number on parts diagrams because, obviously they intended that you'd replace the whole unit with a rebuild. But splitting the calipers makes the cleaning and inspection process drastically easier and I can't imagine any caliper rebuilding shop doing the job without splitting them, so the rebuilders are sourcing them from somewhere.

I'm guessing these are the same on a broad range of Ate calipers furnished as OEM on Porsche, Benz, etc.

The material of choice for brake seals and o-rings appears to be EPDM, but a square cut EDPM o-ring is a pretty exotic item, not to be found at Mcmaster-Carr. They do have buna in square cut and EPDM in standard round cross section.

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Re: o-rings that seal caliper halves

Post by jeffsws » Sun Mar 08, 2020 3:07 pm

I would love to know this as well. That and the torque spec for the four bolts.

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abscate
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Re: o-rings that seal caliper halves

Post by abscate » Sun Mar 08, 2020 5:35 pm

You can find square cut orings in any material

Just use a standard torque for the size of fastener that holds the caliper together.

I broke open a rear caliper and found a round cross section oring
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850oldschool
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Joined: Sat Oct 19, 2019 1:21 pm
Year and Model: 1995 850 NA
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Re: o-rings that seal caliper halves

Post by 850oldschool » Mon Mar 09, 2020 9:37 am

Maybe you could drop us a hint on where you usually shop for "any material" o-rings?

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abscate
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Re: o-rings that seal caliper halves

Post by abscate » Mon Mar 09, 2020 11:16 am

I got some speciality Teflon o rings for a project from a firm in WA called...

The Oring Store


Www.theoringstore.com
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