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 5910-00-562-3725
NSN 2925-00-728-8118
NSN 6145-01-365-4022
NSN 5960-00-557-5420
NSN 2925-00-660-8131
NSN 5935-01-276-5443
NSN 6105-01-204-8985
NSN 5996-01-629-6223
NSN 6610-01-141-7014
NSN 7035-00-111-4389
NSN 6685-00-929-1185
NSN 5915-01-041-6465