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 6320-00-483-0451
NSN 5925-01-476-7536
NSN 4140-00-155-8012
NSN 5960-01-315-0676
NSN 5895-01-286-3376
NSN 6620-00-905-6590
NSN 5996-00-873-2988
NSN 5960-01-212-8118
NSN 5905-01-251-5570
NSN 6645-00-166-7926
NSN 6620-01-168-8450
NSN 5960-01-495-0859