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 6645-00-065-7286
NSN 5975-00-952-1791
NSN 5996-00-067-5219
NSN 6105-01-123-0332
NSN 6150-01-056-2095
NSN 5950-01-341-4838
NSN 2925-01-569-5471
NSN 6220-00-087-0284
NSN 5990-01-608-3505
NSN 6620-01-284-1145
NSN 4140-01-029-4129
NSN 6135-01-231-4809