O rings – where to buy true inch sizes

[Tony MartyrParticipant @tonymartyr14488]

I am making the beam engine to the 'Mary' design which calls for three different sized O rings of imperial sizes. Although listed as 'true inch sizes' on the web site of Exact Rubber they are no longer available.

Can anyone guide me to a possible supplier – I have made O rings in the past from Gaco cord but never as small as two of the rings needed for the valve and piston rods

Tony

[Tony MartyrParticipant @tonymartyr14488]

[David Clark 13Participant @davidclark13]

Try Radiospares. They used to do reasonable price packets of silicon o rings.

[JasonBModerator @jasonb]

Do they need to be true imperial size, I would have thought the engine specifies Nominal sized BS O rings

Most of the ME suppliers will have BS spec rings, post the sizes are given on the drawings, should not be hard to look up the BS number

[Johnboy25Participant @johnboy25]

Try www.mantek.co.uk in Aldershot Hampshire. They sort my requirement out ok.

Usual disclaimer.

John

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