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 5925-01-444-3880
NSN 5895-01-324-4460
NSN 6220-00-248-5511
NSN 5915-01-033-9269
NSN 4140-00-907-0775
NSN 7035-01-143-3573
NSN 6610-00-583-1084
NSN 5935-01-585-5631
NSN 2925-00-494-5537
NSN 6650-01-386-1300
NSN 5985-01-198-4736
NSN 5895-01-223-5953