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 5975-01-304-3887
NSN 5930-00-197-5907
NSN 6145-01-613-0547
NSN 6610-01-444-0169
NSN 2925-01-032-3814
NSN 5855-01-260-7445
NSN 5945-01-112-0190
NSN 6320-01-452-2394
NSN 6105-01-587-3047
NSN 5945-00-959-6309
NSN 5960-01-381-2478
NSN 6610-01-591-4374