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 6145-01-419-0796
NSN 6220-01-456-7083
NSN 5935-01-128-1418
NSN 6110-00-088-1128
NSN 4140-00-269-5795
NSN 6685-01-484-1263
NSN 6645-01-274-2521
NSN 5895-01-279-2587
NSN 6105-00-086-8754
NSN 6105-01-409-2023
NSN 6220-01-003-9126
NSN 5930-01-578-6958