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 6240-01-382-3756
NSN 6685-01-219-9754
NSN 6620-01-340-9425
NSN 5996-01-110-7706
NSN 5935-00-811-2396
NSN 6650-00-272-2271
NSN 6145-01-570-8363
NSN 5998-01-141-1804
NSN 6220-01-071-5467
NSN 6145-01-115-4543
NSN 5935-01-422-2094
NSN 5930-01-492-6967