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 5996-00-932-3796
NSN 5998-00-089-2285
NSN 6150-01-495-0932
NSN 5990-01-004-6343
NSN 5998-01-311-8686
NSN 6145-01-540-9376
NSN 6240-00-266-6258
NSN 6135-01-202-8113
NSN 6145-01-628-1726
NSN 6135-00-947-7091
NSN 5925-01-526-0483
NSN 6110-01-438-7439