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 5920-00-001-3263
NSN 5920-00-073-5507
NSN 5925-00-304-3315
NSN 4140-01-251-6797
NSN 6145-00-280-2154
NSN 5960-00-140-9583
NSN 5910-01-630-6361
NSN 5960-01-260-7430
NSN 5998-01-507-9460
NSN 5945-01-657-9798
NSN 6650-01-618-7779
NSN 5960-01-657-5958