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 6150-00-841-6626
NSN 6145-00-907-9399
NSN 5990-00-020-1048
NSN 6135-00-593-6831
NSN 6620-01-468-0362
NSN 6110-00-778-3558
NSN 5925-00-961-5333
NSN 5975-00-233-6301
NSN 6650-01-573-7165
NSN 6685-01-454-5935
NSN 6610-00-792-6878
NSN 5996-00-903-6308