Another vote for oil filter wrench here. I've seen those 'special tools' crack and is be fuming if that was me.
Also is it the plastic or brass boiler ring? Plastic are known for loosening (and being rather shit in general). If plastic you may get away with nipping it back up and forgetting about it for a while?
@Kalkhoff started
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Another vote for oil filter wrench here. I've seen those 'special tools' crack and is be fuming if that was me.