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 5975-01-544-6222
NSN 5930-01-634-0659
NSN 5910-01-282-9500
NSN 5965-01-588-4465
NSN 5905-00-733-1817
NSN 5910-01-167-9155
NSN 6320-01-585-8468
NSN 5910-00-256-2507
NSN 5930-00-631-9227
NSN 5990-01-588-3999
NSN 2925-00-432-3410
NSN 5985-01-241-7565