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 6130-00-870-3172
NSN 2925-00-617-0826
NSN 5905-00-653-4474
NSN 5835-01-193-6192
NSN 5835-01-386-4027
NSN 6610-01-424-3213
NSN 6145-01-037-9291
NSN 6610-01-023-1918
NSN 5975-00-009-8718
NSN 6320-01-422-1212
NSN 5999-00-262-6041
NSN 6685-01-406-2919