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 6610-01-200-6861
NSN 6130-00-670-7758
NSN 5965-01-547-8788
NSN 6650-01-447-2858
NSN 4140-01-479-1412
NSN 5975-01-183-9470
NSN 6685-00-531-7120
NSN 5925-01-381-8129
NSN 5945-01-131-2506
NSN 6135-00-715-4001
NSN 5915-01-633-9845
NSN 5985-01-660-6720