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 5905-01-390-2001
NSN 5960-01-189-5712
NSN 5990-01-170-0077
NSN 5975-01-089-5167
NSN 6650-01-578-8176
NSN 6620-01-007-1057
NSN 6110-01-038-1454
NSN 6130-01-549-3365
NSN 6130-01-417-9297
NSN 6220-01-461-2910
NSN 5930-01-514-1770
NSN 6645-01-582-9833