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 5925-01-059-5726
NSN 5960-00-003-7982
NSN 6220-01-003-9126
NSN 2925-01-068-3844
NSN 5910-00-393-9515
NSN 6650-00-842-5463
NSN 5945-01-362-0685
NSN 6145-01-522-0357
NSN 5905-00-597-5904
NSN 4140-01-411-9952
NSN 5945-01-195-1975
NSN 5950-00-929-4057