Original 1936 Oil and Gas trade vintage catalog for the WILKENING MANUFACTURING COMPANY.  Main office and plant were located at 2000 South 71st Street, Philadelphia, PA.

Manufacturers of Pedrick Piston Rings. 'Heat-Shaped'.

No other method of manufacturing piston rings equals the PEDRICK exclusive patented process of Heat-Shaping. Heat-Shaping permits us to produce really round piston rings which bear evenly against the cylinder wall. This uniform radial pressure seals the cylinders most effectively and last far longer than rings made by any other process. There are no points of high pressure around the circumference of PEDRICK rings to cause uneven wear. Thus, the rings and cylinder liners wear uniformly and last longer. The liners need not be rebored or replaced so often.

Has product image, description and applications to provide product details.

Unbound from a large rare 1936 Composite Catalog, this unique old one-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro oilfield petroleum industry library.