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 5965-01-262-9608
NSN 5975-01-634-0678
NSN 5935-00-539-9178
NSN 5975-00-284-2207
NSN 4140-00-189-0235
NSN 6220-01-334-6975
NSN 6610-01-224-7247
NSN 5985-01-282-7120
NSN 5925-00-163-6982
NSN 5950-01-586-1910
NSN 7035-01-377-6255
NSN 6130-01-479-4758