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 4140-01-268-1351
NSN 5930-01-329-2424
NSN 5895-00-719-7759
NSN 5935-01-254-5262
NSN 6130-01-613-9864
NSN 5895-01-111-5403
NSN 6685-01-406-2198
NSN 5905-00-824-1371
NSN 2925-01-357-9021
NSN 5945-00-661-0506
NSN 5950-01-072-9946
NSN 6610-00-421-9853