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 5855-01-383-8339
NSN 5915-00-139-5453
NSN 6220-00-507-4740
NSN 6610-01-265-1824
NSN 6105-00-830-2996
NSN 6240-01-093-4202
NSN 4140-01-634-0330
NSN 5910-01-342-2802
NSN 6620-01-369-3589
NSN 4140-00-715-0010
NSN 5965-00-548-3591
NSN 5895-00-799-4689