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 5975-01-055-5633
NSN 5895-00-676-2329
NSN 6685-00-317-4319
NSN 6650-01-627-1480
NSN 6135-00-900-2139
NSN 5998-01-419-9404
NSN 5930-00-822-6020
NSN 4140-01-150-4895
NSN 6220-00-963-9359
NSN 6650-00-868-9092
NSN 5855-01-180-5369
NSN 6320-01-094-2634