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 5996-00-229-7037
NSN 5990-00-238-3333
NSN 6620-00-155-2608
NSN 5960-00-026-3142
NSN 6685-01-168-8893
NSN 5930-01-148-3060
NSN 5855-01-118-6001
NSN 6650-01-532-4213
NSN 5975-01-109-6663
NSN 5920-01-250-3473
NSN 5998-01-602-5343
NSN 6150-01-222-6283