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 5975-01-011-5254
NSN 6320-01-616-0843
NSN 6105-01-555-7388
NSN 5905-00-842-1366
NSN 5965-01-334-3980
NSN 6240-01-487-3840
NSN 5945-00-570-6018
NSN 6685-00-143-4747
NSN 5905-01-476-4972
NSN 5975-00-549-9431
NSN 5855-01-629-6198
NSN 5855-00-198-3197