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 6220-01-301-5411
NSN 6130-01-478-3712
NSN 5930-01-599-7392
NSN 6240-01-016-2172
NSN 5999-01-549-7070
NSN 5925-00-666-4753
NSN 5905-01-391-7806
NSN 6150-01-468-5804
NSN 6220-01-369-4592
NSN 5999-01-020-0824
NSN 5950-00-584-4571
NSN 5910-01-151-1441