Quote:
Originally Posted by BLUNT
This is very good advice.
Buna-N 'O' rings (commonly called Nitrile) are generally said to have good fuel resistance but the nitrile percentage varies considerably and influences the properties of the finished compound.
Those with a high nitrile content are ok for fuel but the market is flooded with 'O' rings having unknown composition from places like China. A low nitrile compound is not ok for fuel so only buy 'O' rings from a reputable source.
It sounds like you guys have got it now:-
Plated brass connectors with Viton 'O' rings.
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Indeed, not only did I break down at the roadside with a blocked fuel supply and have to wait a couple of hours for the recovery van but it was a pig to diagnose as removing/refitting the connector cleared the blockage; for a few minutes until I broke down a mile from home and nearly had a cardiac arrest pushing 200kg of bike up the steep hill leading to my house 'coz I didn't want to wait again.
It wasn't until I looked really closely that I saw the edge of the 'O' ring trapped in the fitting that I realised what had happened...