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 5998-01-442-9817
NSN 5965-01-222-0166
NSN 5930-01-320-9970
NSN 4140-00-074-4242
NSN 6320-01-265-0665
NSN 5945-01-162-7280
NSN 6135-01-408-0313
NSN 7035-01-391-7470
NSN 5975-00-171-3608
NSN 5895-01-519-9373
NSN 6320-01-466-4175
NSN 5925-01-127-6002