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 6620-01-560-4497
NSN 5925-01-553-7746
NSN 4140-01-186-0310
NSN 6240-00-025-9203
NSN 5975-01-562-3506
NSN 6620-01-441-7896
NSN 6240-00-079-0112
NSN 6620-00-021-9041
NSN 5985-00-250-8666
NSN 5965-01-167-8513
NSN 5925-01-441-9624
NSN 2925-01-461-6372