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 5998-01-308-7089
NSN 6610-00-578-6790
NSN 6610-01-096-7129
NSN 5965-00-925-1725
NSN 6645-01-007-9192
NSN 5935-01-537-3131
NSN 5855-01-424-2769
NSN 5975-01-535-7193
NSN 5915-01-067-8145
NSN 5935-01-579-3598
NSN 6240-01-592-4068
NSN 6685-01-499-6864