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 5910-00-944-7187
NSN 5999-00-104-5582
NSN 5925-00-905-5135
NSN 5855-00-951-6483
NSN 5895-01-461-7070
NSN 6150-01-093-5044
NSN 6150-01-281-7279
NSN 6110-01-066-8038
NSN 6220-00-237-3447
NSN 6150-01-084-0282
NSN 5960-01-353-5947
NSN 5950-01-566-2766