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 5996-00-976-3356
NSN 5975-01-600-6849
NSN 6145-01-246-3827
NSN 6620-00-514-3829
NSN 6220-00-586-5492
NSN 6105-01-204-2920
NSN 5935-01-491-9365
NSN 6145-00-088-1321
NSN 4140-00-285-6042
NSN 2925-01-187-5480
NSN 6220-01-152-2637
NSN 2925-00-315-8442