A pipe washer to suit the UMS 7-160cc — the seven-cylinder 160cc four-stroke radial from UMS.
On this engine the component is the sealing washer for a pipe union or banjo fitting.
Why this part matters: these washers deform to seal and are single-use — reusing one is a guaranteed weep. Supplied as a pack of 5, which is how these small parts are normally bought — you rarely need just one.
Fitting note: Use two new washers per banjo bolt and check the bolt face for scoring.
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