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 4140-01-651-2024
NSN 4140-01-494-8902
NSN 6105-01-202-9892
NSN 5975-01-498-5711
NSN 6130-00-166-7934
NSN 5999-00-781-3116
NSN 2925-00-105-2960
NSN 5975-01-188-5200
NSN 5950-00-280-1452
NSN 6610-00-553-5103
NSN 5965-01-429-0881
NSN 6645-01-362-0596