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 5920-00-170-4247
NSN 6110-00-080-2767
NSN 5910-01-505-4719
NSN 6685-01-089-3906
NSN 5950-01-617-3872
NSN 6220-01-598-5354
NSN 5855-01-240-8787
NSN 5895-00-330-9655
NSN 5910-00-430-8355
NSN 6145-01-110-9836
NSN 5998-01-233-8149
NSN 6135-00-686-4777