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 7035-01-541-4216
NSN 2925-01-437-9041
NSN 5998-01-165-9393
NSN 6135-00-643-4843
NSN 5930-00-203-0321
NSN 6145-00-999-6680
NSN 5965-00-568-5802
NSN 5990-00-059-3449
NSN 2925-01-289-6448
NSN 5975-01-304-0549
NSN 5935-00-231-8881
NSN 5990-01-218-5160