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 4140-00-402-6362
NSN 5998-01-585-8441
NSN 4140-01-046-1530
NSN 5935-01-192-1599
NSN 7035-00-585-2113
NSN 6645-01-463-2198
NSN 5905-01-498-5187
NSN 5990-01-198-7953
NSN 5835-00-572-7445
NSN 4140-01-422-8127
NSN 6650-01-296-0883
NSN 6135-01-575-8362