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 6650-00-283-0978
NSN 5930-01-103-3576
NSN 6650-01-367-8917
NSN 5965-01-582-7635
NSN 6240-00-043-2266
NSN 5905-00-959-7149
NSN 6610-00-166-7406
NSN 6685-01-207-6002
NSN 5925-01-380-7283
NSN 5990-01-133-0351
NSN 6145-00-177-2369
NSN 5999-00-303-4624