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 6610-01-268-4191
NSN 7035-01-276-0355
NSN 2925-00-096-5526
NSN 5960-01-430-3911
NSN 5835-00-147-5062
NSN 5945-01-086-0860
NSN 5998-01-493-1883
NSN 4140-00-938-8664
NSN 5910-01-173-2812
NSN 5910-00-856-8148
NSN 7035-00-111-4389
NSN 5990-01-114-3393