Thanks to everyone who made suggestions for taking apart a Playasax.
I have ordered a can of Kroil.  I found it from an eBay seller even
cheaper than at Amazon.com.

In the meantime, does anyone have a suggestion for the material to
make a new gasket?  The old one has fallen apart and the pieces I have
shaken out look thinner than the thinnest cork or inner tube rubber
I have seen.  Would a thick pneumatic cloth work?

David Sharpe
Western Massachusetts