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 6320-01-426-8947
NSN 5835-01-580-0446
NSN 5925-01-216-7300
NSN 5945-01-526-3862
NSN 5935-00-404-3200
NSN 6650-01-370-0589
NSN 6685-01-236-4051
NSN 5915-01-450-4311
NSN 5925-00-233-7523
NSN 7035-00-064-7008
NSN 6135-01-565-3284
NSN 2925-01-415-2140