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 5895-00-306-9882
NSN 6135-01-633-8502
NSN 7035-01-063-0453
NSN 5910-01-644-8589
NSN 6620-01-456-0529
NSN 6650-01-171-6444
NSN 6610-00-553-5103
NSN 6145-01-458-3554
NSN 6110-01-510-0364
NSN 6130-01-281-0393
NSN 2925-01-226-6126
NSN 5985-01-020-6356