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 6650-00-295-1749
NSN 6685-00-186-9190
NSN 6650-01-314-5073
NSN 5835-01-589-4735
NSN 5920-00-498-1392
NSN 6220-01-376-9287
NSN 5975-01-147-1453
NSN 6105-00-950-2311
NSN 4140-00-825-7506
NSN 5965-01-107-2748
NSN 5990-00-404-9567
NSN 5895-01-338-1485