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 5945-00-825-3206
NSN 6685-01-633-5150
NSN 5945-01-056-5035
NSN 5915-01-428-5885
NSN 6150-01-239-3122
NSN 5975-01-286-9038
NSN 6320-00-393-0138
NSN 4140-00-378-0052
NSN 6150-00-809-9114
NSN 6110-01-449-0150
NSN 2925-01-289-6448
NSN 6650-00-071-0612