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 5996-00-951-0074
NSN 5985-00-970-9100
NSN 5975-01-426-7688
NSN 5990-00-636-4218
NSN 5935-00-497-6222
NSN 5975-00-702-4062
NSN 6110-01-397-6057
NSN 6220-01-038-8292
NSN 6145-01-611-7640
NSN 6150-01-056-2095
NSN 6105-00-339-8366
NSN 5935-01-349-6358