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 5915-00-228-0114
NSN 5945-00-182-7384
NSN 5996-00-218-1123
NSN 6150-00-572-3229
NSN 5855-01-548-9651
NSN 5920-00-131-9975
NSN 2925-00-132-1280
NSN 5855-00-237-4088
NSN 5910-00-989-2255
NSN 6110-00-904-8925
NSN 5996-01-228-8888
NSN 5975-01-286-1950