3-11. EQUIPMENT a. Dielectric  Heat  Sealing  Machine.  The  heat  sealing  machine  shall  be  a  straight  bar  sealer  of  a  capacity  suitable for heat sealing two Iayers of 6 MIL thick vinyl film to protect seal lines 1/16 inch (0.1 59 cm) minimum width and  form  21  1/2-  to  27  1/2-inches  (54.61  to  69.85  cm)  in  length.  When  a  machine  is  being  ordered,  requisitioner shall describe available power characteristics (line voltage-220 volts source preferred, line frequency, No. of phases AC or DC), and require supplier to furnish a detailed instruction manual and complete repair and main- tenance procedures, including parts listing. Shielding of the work area about the machine or other suitable means  shall  be  provided  to  meet  local  regulations  concerning  radiation.  A  compressed  air  supply  is  generally required (approximately 100- to 125-psi line pressure) for operation of the sealing press. Suggested commer- cial source of supply for the dielectric heat sealing machine are as follows: THERMATRON ELECTRONICS FMC  CORPORATION DIV. OF WILCOX& GEBLES EXECUTIVE   OFFICES AVENUE  OF  THE  AMERICAS 1105 COLEMAN AVENUE NEW YORK, NEW YORK 10018 SAN JOSE, CALIFORNIA 95110 SEALOMATIC  ELECTRONICS  CORP. PACKAGE MACHINERY CO. 69 SCOTT AVENUE PUTMAN BLDG. BROOKLYN 37, NEW YORK EAST LONGMEADOW, MASS. CENTURY CHICAGO INC. 1225 S. 8th. AVENUE MAYWOOD,  ILL.  60153 b. Hand Sealing Iron. Electric hand sealing iron, approximately 125 watts, Hand-l-Seal model, Packrite Machines Company,  407  E.  Michigan  St.,  Milwaukee,  Wisconsin  53201,  or  equal. 3-15 TM 10-8400-203-23