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 5910-00-956-2513
NSN 5950-01-386-5800
NSN 5915-01-633-9845
NSN 5998-01-590-6190
NSN 6685-01-411-6579
NSN 6685-01-438-2068
NSN 5975-00-733-5988
NSN 6145-00-800-3763
NSN 5930-01-324-6233
NSN 6240-01-657-9047
NSN 5960-00-702-5301
NSN 5925-00-610-1273