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 5930-01-088-8325
NSN 5998-01-554-2209
NSN 5998-01-605-5965
NSN 6150-01-562-9153
NSN 5930-01-543-6486
NSN 5915-01-122-5515
NSN 6240-00-928-7181
NSN 6135-00-985-7846
NSN 6130-01-533-1151
NSN 6110-00-238-9636
NSN 6220-00-947-0265
NSN 5985-00-701-8286