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 6150-01-014-9231
NSN 6220-00-919-8172
NSN 5985-01-226-8970
NSN 6645-01-252-9659
NSN 6650-00-105-8063
NSN 5835-01-522-9881
NSN 6685-01-154-2185
NSN 5920-01-023-4822
NSN 5930-01-354-8119
NSN 6135-01-648-4875
NSN 4140-00-066-4485
NSN 5965-00-871-8987