piston cup packing

[Richard Orr]

Have reinforced rubber cup packing ever been usd in a piston feed pump? Seems that the pressure and temp. ratings could easily handle job.

[87gn@tahoe]

My boat uses those types of packing on both feed pumps, the engine bilge pump, and the fuel pump. The pistons/shafts are chromed and polished. They last quite a while with no need for "taking up"

They work VERY well, and if one's noggin is used whilst designing the machinery, very easy to replace.