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 5945-01-400-0754
NSN 5990-01-040-6358
NSN 5920-00-819-3518
NSN 5910-01-519-3731
NSN 6320-01-111-8851
NSN 7035-01-042-0527
NSN 5998-01-307-0586
NSN 6645-01-437-7770
NSN 5920-01-372-9498
NSN 7035-00-003-7518
NSN 5910-00-881-1528
NSN 5965-01-059-4028