Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines
Builds, Repairs, Show Your Machines! => Restorations => Topic started by: RichSteamTx on April 27, 2026, 11:56:30 am
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I have two Weedens, No.670 & No.3 that have knobs that used some kind of hard white rubber rings. While my No.670 still had its "ring" (which I think is fairly rare) it was ready to fall off after a few adjustments of the steam pressure. Then when I got my No.3, both the whistle & throttle had these same knobs. The throttle's "hub" actually is malformed and sharp as heck and its a hard turner too.
Anyways, I been on a hunt for a O-Right that will work and I found a "better than nothing replacement". They are not a thick, are a much tighter fit, and not solid white. But they are thick enough to rise above the "hub" and show no signs of slipping. Finding White O-Rings seems hard to find, at least for me it is!
O-Ring Spec off Amazon
Type: Sealing O-ring gasket
Material: Silicone
Dimensions: OD 12MM ID 4MM_CS 4.0MM
Heat resistance: +200 degrees Celsius
Cold resistance temperature: -55 degrees Celsius
Features: Wear-resistant, waterproof, insulating
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