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 6110-01-169-9053
NSN 5975-01-650-2645
NSN 7035-01-198-1512
NSN 6240-01-138-4366
NSN 5965-01-483-4447
NSN 6135-00-422-3967
NSN 6240-01-540-0993
NSN 5920-00-409-5630
NSN 5990-01-341-5735
NSN 5925-01-071-1802
NSN 5975-00-306-4688
NSN 6135-01-252-0315