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 5930-01-414-2143
NSN 5985-01-110-4789
NSN 5945-00-220-6789
NSN 6620-00-769-5125
NSN 5905-01-551-1288
NSN 6105-00-220-2741
NSN 5835-01-281-1655
NSN 5975-01-013-0289
NSN 5945-00-167-7544
NSN 6220-01-045-3834
NSN 2925-01-290-8208
NSN 7035-01-357-3726