The original metal plug was choked out of my seat, so I designed and manufactured an upgraded refueling plug with a double silicone ring and a resilient ring nose, clinging to greater power and greater surface.

This well-known and popular fueling and switching kit is available in a variety of sizes, but each one is equipped with a metal (alu) plug + a ringed "handrail".

For me it was always out of place (even when it got a little oil out of gasoline).

My plug is clamped on a much tighter and larger surface with double silicone rings. He was perfectly successful.

O-ring: https://www.ebay.com/itm/Dichtungen-O-Ring-Gummi-Unterlegscheiben-Wei%C3%9F-Kautschuken-M3-M60-Scheiben/132772379890?ssPageName=STRK%3AMEBIDX%3AIT&var=432080296891&_trksid=p2060353.m2749.l2649

Eredeti Magyar: http://www.rc.emiter.hu/rc-miskolc/index.php/2018-11-16-16-22-12