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 5950-01-435-6190
NSN 5950-01-088-3285
NSN 6145-00-919-6176
NSN 4140-01-020-6026
NSN 6610-01-593-8179
NSN 5999-00-278-5563
NSN 6320-01-054-3046
NSN 6320-01-364-1840
NSN 6130-01-213-5863
NSN 6220-01-363-2762
NSN 6220-01-249-3884
NSN 6145-01-531-2294