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 6620-00-366-1365
NSN 5996-00-920-4377
NSN 6610-00-134-5625
NSN 5985-01-081-8506
NSN 6145-01-497-5824
NSN 5990-01-016-8247
NSN 6130-01-340-5299
NSN 7035-00-205-1932
NSN 5835-01-133-6485
NSN 2925-01-350-0200
NSN 5999-01-411-2826
NSN 5996-01-076-6548