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 5965-01-399-4530
NSN 6320-00-521-9350
NSN 6620-00-234-8918
NSN 4140-01-104-4727
NSN 5950-00-510-3135
NSN 6685-00-650-5491
NSN 5950-01-312-4650
NSN 6240-00-099-8606
NSN 6685-01-338-2523
NSN 5910-01-485-1118
NSN 6220-01-525-5956
NSN 5985-01-271-5624