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 5925-00-899-6427
NSN 6145-00-348-4320
NSN 6240-01-444-3508
NSN 6110-01-301-7382
NSN 6320-00-925-0558
NSN 5975-01-562-4927
NSN 5925-01-214-3228
NSN 5915-01-525-5895
NSN 6135-00-405-1989
NSN 5905-01-387-6507
NSN 6150-01-316-1018
NSN 6240-01-394-4075