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 6610-01-419-4123
NSN 5965-00-901-6203
NSN 5855-01-318-7663
NSN 4140-01-460-3381
NSN 6220-01-462-6931
NSN 6135-01-532-7951
NSN 6220-01-381-1793
NSN 5960-01-055-6675
NSN 5985-00-835-1218
NSN 2925-00-246-3077
NSN 5996-01-400-3558
NSN 6685-01-124-9894