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 5920-00-131-9893
NSN 6110-01-431-8889
NSN 6130-01-624-8360
NSN 5930-00-180-4202
NSN 5910-01-332-2175
NSN 6130-01-333-4380
NSN 6135-00-276-7625
NSN 5895-01-442-8459
NSN 6105-01-567-4454
NSN 6650-00-766-5137
NSN 6610-00-997-6876
NSN 6650-01-388-1140