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At 07.54 95-10-26, kaikuran@nm*.nm*.no*.co* (TERHO KAIKURANTA, NMP R&D, +358-10 wrote: >Hi all do-it-your-selfers ! > >Since my recent post about using O-rings I have been receiving >many enquiries for design help and it seems that this kind >of information is badly needed among us. So, I made some >notes on the very basic rules to design a static assembly >(that is, the parts are not moving, rotating, etc.) with >an O-ring. -- big snip -- A few more points. (A found my old designhandbook) Standard 70 o-rings will work up to 100 bars without support rings. Swedish "metric" o-rings (1.6mm 2.4mm (3.0mm 5.7mm 8.4mm...)) are made for standard diameter shafts or holes. Some o-ring catalogs lists recomended dimensionsfor the o-ring groove. There is at least in Sweden a standard for this. (SMS 1586) Poseidon uses mostly metric o-rings, but newer regulators with UNF outlets has some imperial o-rings (1,78mm 2.62mm (3.53mm 5.34mm 6.99mm...)). It is recommended to use a sleeve when an o-ring is pushed over a thread prior to mounting in order to protect it from scrates. /Sten
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