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 5975-01-328-9062
NSN 6320-00-557-3079
NSN 6220-00-993-0419
NSN 6650-01-512-1930
NSN 5975-01-423-8507
NSN 5960-00-266-6741
NSN 6620-00-932-1207
NSN 5960-00-775-3565
NSN 6320-01-572-6395
NSN 6320-01-113-7647
NSN 5998-01-543-4131
NSN 5925-01-426-6923