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 5965-01-243-5494
NSN 5965-01-261-6073
NSN 6240-00-087-1731
NSN 6135-01-457-2855
NSN 5998-00-494-5620
NSN 6135-01-222-0703
NSN 5975-01-653-8567
NSN 5895-00-189-9953
NSN 6220-01-257-9288
NSN 5835-00-830-6416
NSN 2925-01-099-7075
NSN 6220-00-840-0209