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 6220-00-935-4308
NSN 5905-01-119-4259
NSN 5915-00-198-3881
NSN 5996-00-548-6482
NSN 6620-01-530-6515
NSN 6320-01-113-7647
NSN 5950-00-925-1895
NSN 5945-00-369-1585
NSN 6320-00-539-9283
NSN 5935-01-306-3740
NSN 6620-00-254-8985
NSN 6135-00-248-4102