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 6650-01-101-4339
NSN 5920-00-961-6184
NSN 2925-01-094-4771
NSN 6130-01-442-5740
NSN 5945-01-479-5417
NSN 5915-01-227-0918
NSN 5925-01-049-1289
NSN 6130-00-954-1540
NSN 5975-01-222-4285
NSN 6320-01-177-3192
NSN 5985-01-615-9847
NSN 5945-01-342-3358