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 5905-01-531-0999
NSN 6130-01-571-7932
NSN 6150-01-367-2983
NSN 5905-01-467-3836
NSN 5985-01-349-9183
NSN 5985-01-268-1804
NSN 5998-01-252-0056
NSN 6240-01-633-9357
NSN 5895-00-597-8725
NSN 5925-00-576-8179
NSN 6110-01-086-8076
NSN 6620-00-825-2227