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 5985-01-593-3835
NSN 5975-00-559-5676
NSN 6220-01-484-4032
NSN 6685-00-493-9851
NSN 5965-01-204-8505
NSN 5905-01-118-1171
NSN 5855-00-198-3197
NSN 7035-00-679-9027
NSN 5965-01-512-1985
NSN 5950-01-452-2665
NSN 4140-01-453-5596
NSN 5905-00-949-2208