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 5990-01-411-5930
NSN 5920-01-287-3343
NSN 6130-01-485-6928
NSN 6135-00-985-7846
NSN 5935-00-236-9436
NSN 5905-01-657-6449
NSN 5935-01-329-4367
NSN 6650-01-412-1040
NSN 6110-01-391-0211
NSN 5930-01-180-1767
NSN 6610-01-112-8137
NSN 5925-01-423-7803