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 5975-01-342-2292
NSN 6135-01-579-8864
NSN 6130-00-186-0737
NSN 6645-00-238-6170
NSN 6130-00-734-5354
NSN 6685-01-272-8465
NSN 5990-01-619-0935
NSN 5999-00-573-9477
NSN 5975-01-436-8774
NSN 2925-01-381-5307
NSN 5895-00-138-3009
NSN 6220-01-213-1127