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 5915-01-385-1866
NSN 6650-01-452-1167
NSN 6620-01-516-6282
NSN 5915-01-334-6827
NSN 6685-01-465-0237
NSN 6645-01-434-9993
NSN 6105-00-553-1018
NSN 2925-00-105-3907
NSN 5945-01-411-8563
NSN 5960-01-654-4353
NSN 5990-01-529-7307
NSN 5990-01-557-4793