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 5835-00-943-2763
NSN 6220-00-138-0589
NSN 5945-01-046-0346
NSN 6145-01-347-2403
NSN 6130-01-250-3950
NSN 5945-00-733-3725
NSN 5905-01-003-8565
NSN 6620-00-998-5300
NSN 5965-00-463-3929
NSN 5985-01-442-7206
NSN 6150-01-459-9027
NSN 6110-01-090-9906