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 6240-01-050-7537
NSN 5960-00-372-4876
NSN 6135-00-539-8088
NSN 6145-01-290-4883
NSN 6650-00-115-9240
NSN 6105-01-443-5665
NSN 5996-00-217-2654
NSN 6320-01-225-0178
NSN 2925-00-295-8109
NSN 6220-00-409-9500
NSN 5960-01-101-5672
NSN 6130-01-217-0993