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 5960-01-172-2088
NSN 5905-01-422-5509
NSN 5915-01-364-1093
NSN 5910-00-737-5762
NSN 6240-00-928-7181
NSN 5895-01-583-4164
NSN 7035-00-541-8516
NSN 6130-00-435-6995
NSN 5985-00-289-9862
NSN 5950-00-234-2532
NSN 5935-00-273-3861
NSN 6145-00-774-4579