[SEL] leather cups

[FRM8198 at aol.com]

My father used the following method  to make  new leathers for water pumps. 
 I have made seals for a hydraulic jack using  this technique.   
Take the upper part of an old leather boot.  Then cut out circle of leather 
 (the diameter of the cup plus its  length).  Next take a scrap/piece of  
wood and bore a hole which have a diameter of the cup plus twice the 
thickness  of the leather.  Then make a wooden  peg the diameter of the cup.  Soak  
the leather in water for about an hour.  Center the pre-cut circular piece  
of leather over hole in the wood scrap and force the peg on top of leather  
into the hole.  Let dry.  Now you will have a pre-formed leather  cup which 
will fit into your oil can pump.   It may be necessary cut/punch a hole in  
the pre-formed leather for the pump rod.  The oil (in the can) will  cause 
to leather to expand and make a good seal. 
Francis Maciel 
Santa Maria, CA
 
 
In a message dated 7/6/2012 7:18:01 P.M. Pacific Daylight Time,  
andyglines at hotmail.com writes:

Does  anyone know how to make new ones.