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 5990-00-594-7291
NSN 5996-00-111-3379
NSN 5975-00-864-8232
NSN 5925-01-157-1289
NSN 6145-00-913-5982
NSN 6610-00-476-4402
NSN 5985-01-197-7905
NSN 5975-01-032-1616
NSN 5895-01-595-2931
NSN 5910-00-852-7834
NSN 5965-01-540-9628
NSN 5960-00-557-5420