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 5960-01-368-5874
NSN 5855-01-560-1022
NSN 5930-01-627-1667
NSN 2925-01-167-6500
NSN 6685-01-062-7556
NSN 5910-01-237-3456
NSN 5945-01-036-6578
NSN 5975-00-740-1266
NSN 5960-00-469-1126
NSN 6130-00-282-8401
NSN 5925-00-107-4234
NSN 5920-01-535-0796