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 5920-01-553-3340
NSN 6135-01-285-8807
NSN 4140-01-120-9477
NSN 5930-01-143-3962
NSN 5905-01-539-5285
NSN 5895-00-264-0740
NSN 5895-01-113-7725
NSN 5925-00-411-5170
NSN 6620-00-151-5363
NSN 6145-01-224-1829
NSN 5985-00-008-8424
NSN 5930-01-302-3475