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 4140-01-280-4708
NSN 6105-01-418-0824
NSN 5915-01-529-0577
NSN 5996-01-440-9660
NSN 6135-01-424-1114
NSN 6650-00-842-5463
NSN 5975-01-593-6461
NSN 5985-01-659-5534
NSN 5930-01-553-5537
NSN 6610-01-440-0604
NSN 5965-01-485-3501
NSN 5920-00-203-5938