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 2925-00-386-8745
NSN 5960-01-043-8414
NSN 5990-00-932-9324
NSN 5965-01-184-2477
NSN 5985-01-004-4356
NSN 5855-00-821-7512
NSN 5999-01-030-1268
NSN 5960-01-013-9346
NSN 6610-01-159-0438
NSN 5960-01-197-4461
NSN 6320-01-578-6006
NSN 5915-01-371-4194