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 5975-01-274-8813
NSN 4140-00-504-1829
NSN 5990-01-050-7535
NSN 5905-00-598-3700
NSN 5965-00-170-5254
NSN 6645-00-646-6631
NSN 5930-00-493-0589
NSN 5945-00-636-9934
NSN 5960-01-313-0681
NSN 7035-00-135-4758
NSN 6685-01-425-8788
NSN 6135-01-388-2581