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 5910-01-127-5577
NSN 6240-01-542-1448
NSN 5998-01-139-2476
NSN 5975-01-553-5857
NSN 5960-00-295-8957
NSN 7035-00-104-7613
NSN 6135-01-174-9195
NSN 5895-00-947-9585
NSN 5945-00-560-7125
NSN 6645-00-155-2398
NSN 6620-01-523-2273
NSN 6220-01-063-4665