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 5925-01-578-6869
NSN 6110-00-520-2681
NSN 5975-01-023-1777
NSN 6150-01-050-1200
NSN 5925-01-532-4399
NSN 5960-01-425-1454
NSN 5975-00-491-0600
NSN 6135-00-334-4500
NSN 5945-00-254-1428
NSN 5945-00-276-9274
NSN 6135-00-726-4142
NSN 6220-01-281-6027