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 5930-01-643-6674
NSN 4140-00-469-2606
NSN 6105-01-371-3045
NSN 6145-01-151-5197
NSN 5920-00-371-1191
NSN 5985-01-141-7059
NSN 5998-01-444-5783
NSN 7035-01-361-8821
NSN 5855-00-327-2112
NSN 6610-01-633-8931
NSN 5920-01-570-3321
NSN 5905-01-399-0239