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 6240-01-157-9128
NSN 5895-01-398-7238
NSN 2925-00-596-9775
NSN 6145-01-422-0806
NSN 6110-01-410-7637
NSN 6240-01-268-9372
NSN 6150-01-491-9750
NSN 6650-01-056-4386
NSN 5996-01-107-5737
NSN 6645-00-829-8868
NSN 6130-00-397-7690
NSN 5999-01-481-3973