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 5990-01-142-0538
NSN 5920-01-050-6557
NSN 5835-00-617-3578
NSN 6685-01-364-1859
NSN 5855-01-236-9645
NSN 6110-01-476-9035
NSN 5910-01-359-5438
NSN 5920-01-245-3219
NSN 6240-01-549-6400
NSN 5985-00-503-3492
NSN 5998-01-501-3592
NSN 7035-01-467-3101