Fram (body) consists of 3/4-14 aluminum straight pipe; window includes: frame, 3 neoprene spacer washers, 2 aluminum nuts, 1 rubber o-ring and a clear plastic viewer window; dimensions including frame: 1.380 inch in diameter by 0.630 inch thick; cage calls this: sight glass
No other part numbers with same form, fit, and function found.
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: Articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
NSN 5925-00-547-7739
NSN 4140-00-044-1329
NSN 5975-01-290-0121
NSN 6610-01-321-6904
NSN 6135-00-432-8779
NSN 5915-00-357-7316
NSN 6135-00-519-1325
NSN 5945-01-277-4295
NSN 6320-00-004-9158
NSN 5925-01-276-7059
NSN 7035-01-287-9817
NSN 5998-00-156-7249