HFT500 probe seal

[oyster]

What size is it? I might have one in my collection
Any clues how best to remove and fit?

[Archer50]

Assuming you mean the seal in the breech, it's the usual 4.5x1.5 nitrile, 70 Shore that, as far as I know, all the 400/500 series use.

Removing it is easy (in fact almost automatic ), just hook it out. Replacing it is more of a hassle. I use a length of 4mm wooden dowel down the muzzle, held in place with insulating tape, as a backstop to prevent the o ring going past the seating groove, and then fiddle it in with 2 small Allen keys.

If your HFT500 is anything like mine, I'd make sure you have plenty of spares - it's probably the weakest part of the whole design and you might find yourself becoming a bit of an expert

Happy fiddling...

Alan

[oyster]

Thank you Alan.
To confirm, that is 4.5mm od x 1.5mm cs ?
It is the getting the old one out that is usually the challenge!

[TenMetrePeter]

4.5 ID hopefully!

[oyster]

ah yes; 4.5mm od would leave quite a small id !!

[Archer50]

Yep, ID.

I've never had any problems getting them out - they're not held in place by anything except their own rigidity (if that's the right word). I use an old dental pick, but any sort of a hook will do the job fine, just be careful not to scratch the metal.

Alan

[Blackbaronfish]

Use a cocktail stick with a bit of grease to ease it out.

BBF