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 5999-01-170-2181
NSN 5895-00-807-6558
NSN 5985-00-205-2922
NSN 6685-01-014-2049
NSN 5895-00-452-0333
NSN 2925-00-221-4977
NSN 6645-01-400-2119
NSN 6150-01-367-8585
NSN 7035-00-200-5162
NSN 5975-01-435-2152
NSN 5999-01-641-2850
NSN 6650-00-419-4146