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Seal seating tools

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I've a few seals to fit, and I would like to get a bit  smarter at fitting them.

What's the best material to make a tool for a seal fitting thing? Ali or steel?

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Ali is nice and easy to turn and way softer than the bearings so much less chance of scratching bearings if something doesn't go quite right. Delrin or Acetal (machinable nylon type stuff) is good too; it's easily strong enough. 

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The old seal usually makes a good seating tool.

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4 hours ago, zardos said:

The old seal usually makes a good seating tool.

With a suitably sized socket to apply motive force via a buggering stick, and an extension if reach is needed.

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I think I'll get a chunk of ally to play with.

Thanks all.

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14 hours ago, lo-fi said:

Ali is nice and easy to turn and way softer than the bearings so much less chance of scratching bearings if something doesn't go quite right. Delrin or Acetal (machinable nylon type stuff) is good too; it's easily strong enough. 

Delrin is a trade name for acetal.

 

 

 

 

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Have a look in the workshop manual, somewhere (I can't remember where now) but there are drawings for the LR special tools. I know I found one years back for setting Defender hub seals to the correct depth and made a 6082 Ali one.

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1 hour ago, vulcan bomber said:

Delrin is a trade name for acetal.

 

 

 

 

You learn something every day! It's handy stuff, I've been getting offcuts from an engineering firm down the road for years and made all sorts out of it. 

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I never thought of plastic. It makes sense, but can I use the same tooling on the lathe?

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Depends on the tooling, I always found the Delrin/Acetal/Peek liked Aluminium type tips, the ones with a really sharp edge. Plastic can sometimes prefer to be pushed out of the way rather than being cut if that makes sense?

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Delrin/acetal is certainly one of the nicer plastics out there to machine.

 

Plastic as a general will machine with carbide inserts as long as your not trying to do something thin where it will just deflect out of shape. You will do much better with positive rake inserts however.

 

If your machining plastic in the future avoid the glass filled stuff at all cost.

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