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 5960-01-312-1262
NSN 6610-00-664-2190
NSN 6220-01-107-4595
NSN 6320-01-287-5345
NSN 5895-01-177-1135
NSN 6610-01-414-1755
NSN 6110-01-607-3458
NSN 6105-01-398-0814
NSN 2925-01-474-3363
NSN 5920-01-051-0090
NSN 4140-01-544-8168
NSN 6105-01-359-3886