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 6685-01-522-6850
NSN 6220-01-208-5556
NSN 5915-00-503-8050
NSN 6645-01-255-9886
NSN 7035-01-641-5298
NSN 4140-00-677-3510
NSN 2925-00-858-0949
NSN 5990-01-491-1397
NSN 5935-01-384-1969
NSN 6645-01-528-7152
NSN 5835-01-085-5487
NSN 6145-00-911-9245