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 2925-01-043-9786
NSN 5920-01-127-0252
NSN 6645-01-258-5558
NSN 4140-01-384-3405
NSN 5960-00-231-3767
NSN 2925-01-448-2880
NSN 6105-01-360-5629
NSN 7035-01-359-3915
NSN 6320-01-378-6191
NSN 5910-00-767-1569
NSN 5996-01-177-8923
NSN 5985-01-197-1739