The answer depends on the type of seal, shaft diameter, what you are sealing in/out and, more importantly, what you consider an "acceptable level of sealing (leakage). If you are using conventional lip seals on a normal but worn shaft, consider a speedisleeve. They're made by CR industries, the same folks who make seals.
John
Does anyone know of any good sites for information on oilseals? How much "bite" onto a shaft would be normal, lets say for a 100mm shaft. So how much under 100 mm could a shaft be, to be still able to fit a 100mm oilseal and still have an acceptable level of sealing? I have a reason for asking these somewhat abstract questions, which I can explain if anyone is intrested in a rather lengthy essay.
Steve the grease
Steve, An educated guess would say about 1.5 mm anything larger it won't work. I assume you are refering to spring type lip seals for shafts. A trick in the motor trade on older cars is to stop aseal leaking is to remove the spring and undo it as one end screws into the other, shorten it a little and refit.
Martin P
I'd like to read the extensive essay ;o))
Come on, tell us, you know you want to!
regards,
Kim
I had a quick look in the Payen seal catalogues that I have, and they don't say much at all, except that as a general guide the shaft should be 1/16" smaller than the sealing medium, this being spring-loaded seals mainly.
Peter
?
"It should be noted that the diameter of the sealing element should be approximately 1/16" smaller than the shaft diameter"
I put 'element' instead of 'medium' having already read it earlier on the page.
Peter
Noooooooo..That's not what you put. :-)
Tom
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