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 6150-01-024-0318
NSN 6150-01-549-7550
NSN 6320-01-450-7513
NSN 6135-00-145-8884
NSN 6150-01-014-0989
NSN 5930-01-188-8908
NSN 6645-00-801-0950
NSN 5925-01-467-9910
NSN 6220-01-190-6906
NSN 6645-01-017-3593
NSN 5895-00-503-7332
NSN 5975-01-359-4848