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 6645-01-250-3787
NSN 5905-00-433-2431
NSN 6110-01-125-4903
NSN 5935-01-297-5920
NSN 5895-01-172-1450
NSN 5905-01-363-4559
NSN 6105-01-373-5812
NSN 6650-00-555-1061
NSN 6320-00-564-2772
NSN 6650-01-121-6904
NSN 6645-01-107-2615
NSN 6105-01-559-0812