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 6130-01-555-8531
NSN 5920-00-754-5252
NSN 5915-01-421-3790
NSN 2925-00-169-3775
NSN 5915-01-384-3858
NSN 6130-01-609-6827
NSN 5915-00-193-6850
NSN 5950-00-121-1852
NSN 6685-01-357-6358
NSN 5855-01-286-9928
NSN 5985-00-649-8318
NSN 5855-01-323-5394