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 6320-01-287-0540
NSN 6610-01-626-8139
NSN 5920-00-215-5642
NSN 6110-01-406-0693
NSN 6145-01-011-3231
NSN 6145-00-551-5288
NSN 6610-01-298-2649
NSN 6110-00-159-0755
NSN 6110-01-533-3862
NSN 6620-01-112-6440
NSN 6130-00-392-1992
NSN 5945-01-172-5700