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 6650-00-269-5000
NSN 6220-01-514-6996
NSN 5895-00-023-4438
NSN 5920-01-218-6191
NSN 5855-00-925-7887
NSN 6150-00-144-7115
NSN 6650-01-105-9500
NSN 6150-01-586-9360
NSN 5960-01-419-8142
NSN 5950-01-272-9689
NSN 5990-01-017-0263
NSN 2925-00-265-7539