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 6610-01-347-6781
NSN 6620-01-633-8443
NSN 5990-01-582-1977
NSN 6610-00-536-4977
NSN 5925-01-467-9910
NSN 5925-00-017-9718
NSN 6650-00-977-7533
NSN 5905-01-273-6671
NSN 5999-01-401-5322
NSN 6110-01-284-0318
NSN 7035-01-575-1026
NSN 6150-00-533-3922