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 5960-01-506-7039
NSN 6105-01-170-5420
NSN 5945-00-202-5133
NSN 5925-00-170-4090
NSN 6240-00-413-4577
NSN 5895-00-270-0949
NSN 5990-00-162-7273
NSN 5835-01-281-7281
NSN 6610-01-512-8154
NSN 5999-01-422-1676
NSN 5935-01-164-3998
NSN 5905-00-775-0552