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 4140-00-419-0631
NSN 5910-01-144-3100
NSN 5915-01-154-3830
NSN 6645-01-456-6035
NSN 5915-00-004-2017
NSN 6220-00-172-7641
NSN 5945-00-948-6446
NSN 5835-00-954-2833
NSN 6220-01-406-8157
NSN 6145-00-388-9084
NSN 6610-01-415-5877
NSN 6620-01-254-3609