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 6610-01-578-7771
NSN 5915-00-556-6163
NSN 6220-01-042-4613
NSN 6105-00-338-9436
NSN 5999-01-381-3663
NSN 5930-01-367-8698
NSN 6320-00-343-1798
NSN 5930-00-584-4526
NSN 6620-00-050-9831
NSN 5985-01-196-1191
NSN 2925-00-553-8799
NSN 5975-01-384-7912