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 5930-00-837-0873
NSN 2925-00-816-8765
NSN 6620-01-253-0374
NSN 5985-01-501-0003
NSN 5915-01-442-6050
NSN 2925-01-556-0333
NSN 5990-01-200-7460
NSN 6135-01-507-4346
NSN 6650-00-361-1808
NSN 6685-01-341-2161
NSN 6105-01-133-1875
NSN 5925-01-032-3461