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 6150-01-153-2796
NSN 5910-01-359-8909
NSN 6610-01-373-8066
NSN 6110-00-038-0074
NSN 6685-01-010-0451
NSN 6240-01-326-5428
NSN 6145-01-610-5291
NSN 5895-00-644-5712
NSN 5996-01-573-3119
NSN 5930-00-226-8016
NSN 5945-00-515-2667
NSN 5855-01-436-7621