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 5990-00-373-9787
NSN 5985-01-152-6754
NSN 5920-01-460-4290
NSN 5960-01-283-2281
NSN 5910-00-709-3233
NSN 5910-01-407-3377
NSN 5895-01-082-6864
NSN 6620-01-502-9104
NSN 5905-01-212-3864
NSN 7035-01-215-2449
NSN 5945-01-437-3454
NSN 2925-01-264-4092