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 5930-01-362-6996
NSN 5996-00-957-7923
NSN 6110-01-451-4326
NSN 5895-01-394-5343
NSN 6685-01-430-9192
NSN 5996-00-468-1874
NSN 5930-01-481-3851
NSN 5915-00-221-9610
NSN 2925-01-464-3093
NSN 6150-00-138-3068
NSN 5985-00-835-1218
NSN 5945-00-445-2778