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 5910-00-809-3781
NSN 5950-00-124-0033
NSN 6150-01-205-0566
NSN 5985-00-420-7955
NSN 6650-01-079-9838
NSN 5910-01-099-2536
NSN 5925-00-160-4747
NSN 5990-00-840-6571
NSN 6130-01-551-8266
NSN 6105-00-501-7681
NSN 6645-01-493-8632
NSN 5975-01-013-8549