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 4140-01-410-9798
NSN 5915-00-868-4377
NSN 5910-01-281-2189
NSN 7035-01-578-2288
NSN 5960-00-594-0824
NSN 5925-01-584-5331
NSN 6620-00-460-2909
NSN 5965-01-313-1544
NSN 5999-00-584-1867
NSN 5999-01-096-1678
NSN 6220-00-904-0156
NSN 5965-00-897-0618