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 5920-00-883-0993
NSN 5835-01-116-2369
NSN 5915-00-378-5585
NSN 6685-01-501-5362
NSN 5925-00-103-7658
NSN 5945-00-289-9859
NSN 6685-01-178-7635
NSN 6685-01-398-5906
NSN 5925-01-626-8112
NSN 4140-00-238-9940
NSN 5855-01-463-7372
NSN 5975-00-061-7035