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 5975-01-170-3480
NSN 5998-01-392-1137
NSN 6320-01-332-7020
NSN 6130-01-429-0063
NSN 6650-00-393-0447
NSN 5945-01-067-7955
NSN 5985-01-417-3184
NSN 5965-01-474-5654
NSN 5996-01-233-0372
NSN 6130-01-099-4950
NSN 5990-01-206-3606
NSN 5950-00-422-8579