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 5915-00-665-2323
NSN 5999-01-096-6645
NSN 6110-01-649-6264
NSN 5835-01-399-5820
NSN 5965-00-549-0220
NSN 6320-00-295-2854
NSN 5990-01-254-2936
NSN 5965-01-432-1943
NSN 5905-00-493-1821
NSN 5965-01-204-8505
NSN 2925-00-853-5039
NSN 4140-01-213-2910