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 6650-01-082-8962
NSN 5895-01-218-4258
NSN 6110-01-391-6497
NSN 5998-00-298-0295
NSN 5950-01-421-4138
NSN 6220-01-462-1479
NSN 6220-00-003-1524
NSN 6150-00-903-5049
NSN 6145-01-120-0918
NSN 5895-00-297-6689
NSN 5920-01-105-8996
NSN 5975-01-358-3031