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 6130-00-812-2357
NSN 5990-01-623-0082
NSN 2925-01-500-0730
NSN 6620-01-306-1347
NSN 6105-00-178-0094
NSN 5975-01-555-1342
NSN 5990-01-203-4075
NSN 6685-00-212-4531
NSN 5915-00-058-9207
NSN 5945-01-541-4827
NSN 6135-00-851-8575
NSN 5999-01-551-1661