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 5985-01-279-0066
NSN 5960-01-622-0393
NSN 4140-00-232-9859
NSN 6130-01-458-5201
NSN 6650-00-006-8647
NSN 5835-00-179-8451
NSN 5925-00-978-9452
NSN 5990-01-042-8524
NSN 5950-01-608-3142
NSN 5855-01-020-7982
NSN 6610-00-074-9586
NSN 5855-01-378-9048