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 7035-01-424-7019
NSN 5855-01-294-2804
NSN 5920-01-559-2658
NSN 6135-00-267-9432
NSN 6145-00-926-8323
NSN 5998-00-434-2171
NSN 6110-00-951-9824
NSN 6685-01-654-0750
NSN 6320-00-284-1524
NSN 5925-01-486-5496
NSN 5895-00-162-5255
NSN 6150-00-844-2206