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 5985-01-208-4795
NSN 5930-00-420-4915
NSN 5920-01-067-4897
NSN 6130-01-040-9812
NSN 5945-01-416-7583
NSN 6240-00-191-2855
NSN 6650-01-261-5239
NSN 6620-00-871-9642
NSN 6240-01-501-8865
NSN 2925-01-253-6006
NSN 6105-01-571-7371
NSN 6105-01-514-4447