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 6610-01-302-0148
NSN 5910-01-323-9461
NSN 7035-00-371-7749
NSN 5999-00-103-7633
NSN 4140-01-609-6084
NSN 5935-01-569-8651
NSN 5835-01-123-8305
NSN 5910-01-577-1236
NSN 6150-01-329-2372
NSN 4140-01-257-2676
NSN 5835-01-004-8997
NSN 6240-01-433-9410