Plate has a recess for an o-ring.
A metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See support, as modified. Do not use if a more specific name applies.
NSN 5915-00-082-7779
NSN 6135-00-635-9187
NSN 5999-00-078-9890
NSN 5975-00-523-2275
NSN 6650-00-006-9650
NSN 5895-01-249-0785
NSN 6685-01-156-4642
NSN 5996-01-426-6713
NSN 5855-01-606-3587
NSN 6130-01-233-7885
NSN 5925-01-602-9311
NSN 6220-01-122-3155