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 5945-00-403-0489
NSN 5960-00-140-9583
NSN 5910-01-158-6870
NSN 5835-01-416-6449
NSN 6110-01-251-6842
NSN 5965-01-202-1007
NSN 2925-00-833-9466
NSN 7035-01-438-2108
NSN 6145-01-010-3402
NSN 6135-00-231-7257
NSN 6130-01-318-1803
NSN 6650-01-607-6891