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 6320-00-643-0958
NSN 5950-01-204-7340
NSN 6150-01-298-1560
NSN 5975-00-337-6653
NSN 5945-00-089-8066
NSN 5855-01-364-1005
NSN 5915-01-153-2623
NSN 5915-00-248-4974
NSN 5950-01-231-1283
NSN 6110-00-941-1882
NSN 6240-01-287-0524
NSN 6685-01-413-9362