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 5945-01-237-5447
NSN 5925-01-466-5271
NSN 6105-01-468-5605
NSN 5996-00-979-9881
NSN 5930-01-657-3286
NSN 6135-01-010-0891
NSN 5915-01-303-6641
NSN 6650-00-299-9681
NSN 4140-01-065-8148
NSN 6110-01-032-2899
NSN 5965-01-204-8505
NSN 6620-01-078-6372