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Clive S
18-03-2017, 10:03 AM
Ok for all you engineers out there.

I have two O-rings one id 6mm & 2mm cross section and another id 7mm & 1.5 cross section.

I have a bore of 10mm and a piston 9.96mm. What size groove do I need in the piston for hydraulic dynamic use (this is for a powered draw bar) the piston will move about 7mm in the bore.

mekanik
18-03-2017, 10:42 AM
Hi Clive
Information should be in there .
https://www.jameswalker.biz/en/pdf_docs/3-o-ring-guide
Regards
Mike

komatias
18-03-2017, 10:48 AM
Clive,

I design pressure systems up to 30ksi. For up to 15ksi, the starting point is the Parker catalogue:

http://www.parkerhannifin.ru/upload/iblock/3bd/catalog_o_ring_guide_ode5712_en.pdf

In most cases, imperial o-rings are easier to source but there is always a metric equivalent.

Clive S
18-03-2017, 03:54 PM
Mike & George Many thanks for the homework you have provided for me. I have found this as well https://oringcalculator.eriksgroup.com/# but I can't seem to get the answer from it. So I will sit down and bang my head against the wall for a bit:crushed: