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 6135-01-119-0720
NSN 5975-00-952-1791
NSN 5965-01-632-5954
NSN 5910-00-543-9578
NSN 6110-00-371-1646
NSN 5920-00-259-7294
NSN 5930-00-234-0213
NSN 5965-00-391-0562
NSN 6685-01-162-5075
NSN 4140-01-518-6371
NSN 6135-00-738-5571
NSN 5910-00-180-0221