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 6220-00-061-8076
NSN 5990-01-352-5255
NSN 5910-01-605-9524
NSN 5915-00-378-0744
NSN 5835-01-074-1161
NSN 5975-01-130-8501
NSN 6320-01-495-0512
NSN 5925-01-092-1005
NSN 6320-00-300-5556
NSN 5950-01-195-2334
NSN 5910-01-278-3414
NSN 5945-00-369-8757