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 4140-01-048-5472
NSN 6110-01-515-0420
NSN 5910-01-209-1659
NSN 5935-00-577-2700
NSN 7035-01-385-7306
NSN 7035-01-102-2386
NSN 5935-00-313-7225
NSN 6135-01-177-3552
NSN 5945-01-147-5727
NSN 6240-01-310-9380
NSN 5925-01-521-6817
NSN 6105-01-442-6446