"REFERENCE DATA AND LITERATURE:T.O. 5P5-3-67-4,FIG 2,INDEX 50,PAGE 2-5;BELLOWS MUST STAND INTERNAL PRESSURE OF 125 PSI WHEN RESTRAINED WITHOUT PERMANENT DEFORMATION;HARDNESS OF BELLOWS TO BG ROCKWELL C-40 OR HIGHER;TEMP OPERATING-100E TO PLUS 500F;FSC APPLICATION DATA:TRANSMITTER ENGINE PRESSURE RATIO,FSCM 73030,P/N 4189-11000,6620009453072BJ;"