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 5935-01-530-5917
NSN 2925-01-043-9786
NSN 5999-01-354-4498
NSN 6240-00-226-0462
NSN 6150-01-093-5254
NSN 5996-01-150-2800
NSN 6645-01-653-2848
NSN 4140-01-270-4749
NSN 2925-01-474-3363
NSN 5895-01-009-2830
NSN 6650-00-287-5868
NSN 5920-00-187-0260