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 5965-01-170-9891
NSN 5910-00-811-6300
NSN 5910-01-461-8191
NSN 5975-00-239-2364
NSN 6105-01-303-3089
NSN 5960-01-094-5958
NSN 6220-00-909-7239
NSN 6650-00-929-3946
NSN 6685-01-398-7371
NSN 5998-00-401-0511
NSN 6240-01-050-9156
NSN 5998-00-001-3711