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 5945-00-513-2977
NSN 6220-00-383-4474
NSN 5985-00-400-1468
NSN 6685-00-927-6027
NSN 6130-00-090-9907
NSN 6150-00-900-4984
NSN 5999-00-964-5716
NSN 5950-01-486-4907
NSN 6105-01-219-5530
NSN 6135-00-950-0604
NSN 2925-00-254-9776
NSN 5996-01-361-6463