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 6145-00-311-8884
NSN 5960-00-007-2589
NSN 6650-01-492-7809
NSN 5925-01-105-0549
NSN 5925-01-518-4100
NSN 4140-00-486-6292
NSN 6685-00-800-8143
NSN 5895-01-562-4902
NSN 7035-01-631-9354
NSN 2925-01-185-9144
NSN 5925-01-144-1231
NSN 5920-01-546-7966