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 5975-01-361-9830
NSN 6145-01-044-1635
NSN 6220-01-631-4422
NSN 5915-01-359-4847
NSN 5935-01-323-7118
NSN 5960-01-319-6735
NSN 2925-00-017-9807
NSN 5835-01-163-4215
NSN 6105-00-244-5197
NSN 5855-00-494-9581
NSN 6130-01-389-6937
NSN 5990-01-203-6089