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Default Custom seals to keep debris out of linear bearings?

On 04/06/2021 01:41 PM, John Doe wrote:
Plastic filament won't work for bearings here, because the bearings must move
freely on rods even when twisting pressure is applied.

My main problem is a dire need to make 8 mm bearing seals that actually fit
the 8 mm rod. The silly rubber seals that come with cheap bearings have a gap
wide enough to allow tiny particles into the bearing.

Any ways to make close-fitting but easy sliding bearing shields out of
whatever material?

Thanks.


8mm valve stem seals.

VitonĀ® fluoroelastomer, Teflon... no silly rubber.

And springs wrap around them. See?
https://i.ebayimg.com/images/g/ZfIAA...N8m/s-l800.jpg
Nothings getting past these.