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 4140-01-272-6060
NSN 2925-00-215-4954
NSN 6130-00-246-6915
NSN 7035-00-392-5417
NSN 5915-00-166-0764
NSN 5990-01-013-8464
NSN 5945-00-735-7186
NSN 5990-01-277-9753
NSN 6145-01-421-2458
NSN 5950-01-537-6030
NSN 4140-00-081-6814
NSN 2925-00-149-0760