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 5930-01-645-6334
NSN 6610-00-126-7425
NSN 2925-01-109-1518
NSN 5990-01-502-8209
NSN 5935-01-406-3406
NSN 5925-01-343-8208
NSN 6105-01-183-5509
NSN 5910-01-280-5405
NSN 6240-00-762-7456
NSN 5930-01-462-7142
NSN 6320-01-347-2638
NSN 5915-01-381-6547