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 6145-01-392-5960
NSN 5996-01-231-4361
NSN 5920-01-364-5193
NSN 6610-01-202-1373
NSN 5895-01-313-3229
NSN 6145-00-998-7609
NSN 5985-01-605-1582
NSN 6620-01-504-0997
NSN 5990-01-157-0441
NSN 5975-01-284-3533
NSN 6610-00-980-8068
NSN 5945-01-367-6469