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 6645-01-201-4327
NSN 6610-00-353-9990
NSN 5855-00-862-3345
NSN 6145-01-258-6101
NSN 6620-00-060-6801
NSN 5920-00-598-0469
NSN 5996-01-641-0124
NSN 5835-00-247-0161
NSN 5999-01-442-8261
NSN 5930-01-573-7607
NSN 5965-01-482-4352
NSN 6685-01-399-1701