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 6220-00-285-5786
NSN 6650-01-132-6860
NSN 6130-01-500-9676
NSN 7035-00-703-3535
NSN 6130-00-187-0211
NSN 6620-01-466-2842
NSN 6130-00-243-2208
NSN 5975-01-220-8905
NSN 5920-00-172-8272
NSN 4140-01-444-2083
NSN 5915-01-068-9447
NSN 4140-00-147-5864