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 6220-00-892-5187
NSN 5960-01-429-5897
NSN 6320-01-162-5977
NSN 6685-01-353-2375
NSN 5950-01-340-4580
NSN 6650-00-223-7301
NSN 5835-01-553-6772
NSN 6620-01-138-6132
NSN 5855-01-147-4785
NSN 7035-01-651-0678
NSN 4140-00-761-3880
NSN 5935-01-048-0166