A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6145-00-185-4515
NSN 6320-01-543-3238
NSN 5985-01-134-0461
NSN 6610-01-381-0652
NSN 7035-00-020-2227
NSN 4140-01-295-8143
NSN 6645-01-363-2519
NSN 5999-00-971-1936
NSN 5998-00-707-5781
NSN 6135-00-196-5267
NSN 5996-01-487-6811
NSN 6145-01-425-9981