506,030. Stuffing - box packings. ARMSTRONG,ÀF. G. G. Oct. 19, 1937, No. 10446/39. Divided out of 504,347. [Class 122(v)] In a packing comprising a wear resisting portion 10 and a resilient backing 11, the portion 10 is formed truly cylindrical by the method of circular knitting. The portions 10, 11 are respectively of fabric or canvas and rubber or the like. The parts may be vulcanized together, the inner surface remaining unvulcanized to provide an oil absorbent surface.