[Dave Bilyk]

I have slight leakage from HiSpec rear caliper banjo tightened as much as I dare, but no torque figure supplied or used.
Does anyone have a torque figure for a 10mm a 1 banjo in alloy caliper?

Also, I have tried two washers, the first, as supplied, was a solid washer.
The second was a used washer with smaller OD (= higher tightening pressure) which sealed better but still a small leak.
I then tried annealing the second washer, now only one leaks a tiny bit.
This second washer, has a groove in the outside edge, which makes me think it may not be a simple solid washer. If so, maybe I need to use new not used to get a seal.
I also saw a USA site offering something similar to a Dowty washer, (a rubber seal with a metallic reinforcing / retaining ring.
Anyone have any comments on these three washer types?

Note I am desperate not to overtighten and lose the caliper thread esp since the bolts as supplied were too long and I had to shorten them 3 threads. Makes me nervous.

Any help gratefully received.

Dave