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 6135-00-369-2368
NSN 4140-00-148-7013
NSN 6220-01-593-5083
NSN 6220-00-554-5937
NSN 5975-01-030-5745
NSN 5835-00-233-6327
NSN 5915-01-176-6635
NSN 5925-01-429-7596
NSN 5925-00-724-9811
NSN 5895-01-164-6313
NSN 6320-01-171-3238
NSN 6685-00-248-5820