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 5975-01-473-7204
NSN 5998-01-430-3883
NSN 4140-00-829-8765
NSN 7035-01-558-6203
NSN 5999-01-106-2705
NSN 6650-00-751-9958
NSN 6135-01-281-4758
NSN 6240-01-444-1519
NSN 5945-01-556-7258
NSN 5975-00-246-4906
NSN 6130-00-825-2654
NSN 6610-00-010-3085