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 5925-00-973-1160
NSN 5855-01-165-6361
NSN 5945-00-614-1556
NSN 5950-01-567-5770
NSN 5935-00-231-3185
NSN 6135-00-593-6831
NSN 6620-01-572-3510
NSN 5950-00-306-3440
NSN 6105-01-039-3711
NSN 6685-01-042-3166
NSN 6135-01-491-9360
NSN 5960-01-102-6746