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 2925-01-534-7314
NSN 6320-01-449-1014
NSN 6105-01-463-8557
NSN 5835-00-166-9413
NSN 5925-01-158-9799
NSN 5985-01-535-0459
NSN 6240-01-018-4895
NSN 7035-01-514-8522
NSN 6220-01-044-9079
NSN 5920-00-295-7311
NSN 6620-01-306-1347
NSN 5835-01-005-8564