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 6240-00-353-5753
NSN 5945-01-061-5209
NSN 6135-01-098-3020
NSN 5975-01-052-3489
NSN 5998-01-359-5089
NSN 5999-01-250-9400
NSN 5835-01-209-6410
NSN 5990-01-246-2488
NSN 6650-00-248-4895
NSN 5935-01-207-7213
NSN 2925-01-386-7392
NSN 6150-00-399-1431