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 5910-01-377-2630
NSN 6150-01-400-4211
NSN 5915-00-873-3190
NSN 5998-01-312-2186
NSN 6135-01-448-9474
NSN 6645-01-479-0804
NSN 6610-01-487-7256
NSN 7035-01-211-5636
NSN 5855-00-316-5050
NSN 5910-01-386-6385
NSN 5999-00-451-7627
NSN 6685-00-198-5789