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 5895-01-009-9225
NSN 5990-01-421-3325
NSN 6620-00-936-3463
NSN 6645-01-514-7403
NSN 5930-01-512-3034
NSN 6610-01-552-2151
NSN 5910-01-331-7589
NSN 2925-01-345-4816
NSN 5975-00-442-3500
NSN 4140-00-215-8593
NSN 6650-01-633-2430
NSN 5895-01-155-9623