Heat resistant
A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.
Classification: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass
NSN 6650-01-273-9775
NSN 5895-01-616-9929
NSN 6105-01-058-9015
NSN 5905-01-164-6299
NSN 2925-00-185-1618
NSN 6645-00-171-9639
NSN 5975-00-284-6177
NSN 6130-01-043-1794
NSN 6650-01-096-2283
NSN 6130-01-449-0458
NSN 6145-00-423-1563
NSN 4140-00-493-4759