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 6105-01-060-5438
NSN 4140-01-128-2701
NSN 2925-01-633-4048
NSN 6645-01-216-7168
NSN 5930-01-293-9984
NSN 5996-00-644-4662
NSN 5990-01-253-5672
NSN 5985-00-277-7371
NSN 5965-01-406-6320
NSN 5915-01-380-3934
NSN 6145-00-311-8884
NSN 5965-01-067-9280