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 5920-01-101-6627
NSN 6620-01-480-3407
NSN 6645-00-663-6002
NSN 5935-00-167-8028
NSN 6150-01-461-4830
NSN 5915-00-248-8655
NSN 5996-01-251-1149
NSN 6240-00-485-6012
NSN 6650-01-087-0862
NSN 5985-01-041-9243
NSN 5990-01-370-7119
NSN 5925-01-142-1996