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 6145-00-883-7420
NSN 6135-00-826-4798
NSN 5985-01-211-3949
NSN 5999-01-298-7897
NSN 5950-00-772-6668
NSN 5910-01-430-7235
NSN 5835-01-158-6878
NSN 6105-00-649-8482
NSN 5905-00-707-8882
NSN 5999-01-061-5970
NSN 5915-01-074-2651
NSN 5945-01-571-4505