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 4140-01-534-5450
NSN 5945-01-141-4734
NSN 5920-01-224-7946
NSN 6130-00-766-0813
NSN 5965-01-287-7235
NSN 5920-01-514-7007
NSN 6645-01-595-6165
NSN 2925-00-635-6907
NSN 6650-01-599-5044
NSN 5935-00-538-6228
NSN 5855-01-424-7477
NSN 5996-01-356-3791