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 5975-01-146-8932
NSN 6650-01-627-0303
NSN 6320-01-119-3935
NSN 2925-00-536-4574
NSN 5960-01-563-0020
NSN 4140-00-365-2531
NSN 6650-01-176-6143
NSN 5960-01-617-6345
NSN 5996-01-366-1006
NSN 6650-01-339-5257
NSN 7035-00-131-8219
NSN 6685-01-340-6330