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 6220-01-279-0527
NSN 5855-01-344-8688
NSN 5855-00-869-3635
NSN 6645-01-483-5519
NSN 6135-01-332-0431
NSN 6150-01-550-4862
NSN 5960-01-223-9466
NSN 6130-01-536-0792
NSN 6645-01-434-0248
NSN 6620-00-038-5343
NSN 5950-00-502-5160
NSN 5910-00-827-1328