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 5998-00-741-2321
NSN 5920-00-653-0019
NSN 6145-01-076-5071
NSN 6650-00-477-4538
NSN 4140-01-563-3500
NSN 4140-00-542-4611
NSN 6240-01-530-3040
NSN 6645-01-425-1673
NSN 5920-01-391-5666
NSN 6610-00-763-2415
NSN 5855-01-459-1151
NSN 6620-01-330-8802