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 5920-01-187-6100
NSN 6145-00-815-8012
NSN 5999-01-640-9712
NSN 6150-01-634-0575
NSN 6685-01-388-2236
NSN 6110-01-166-5066
NSN 5975-01-380-4799
NSN 2925-01-470-5534
NSN 5855-01-327-6678
NSN 2925-01-568-3705
NSN 6320-00-160-0899
NSN 6240-00-196-6472