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 6220-01-449-0952
NSN 6240-01-463-8276
NSN 5855-01-035-2866
NSN 5920-00-271-3217
NSN 6150-01-255-5507
NSN 5965-00-458-7321
NSN 7035-00-991-6877
NSN 5835-00-228-9082
NSN 6645-01-241-4300
NSN 5935-00-446-3159
NSN 7035-01-013-0934
NSN 5985-00-399-1174