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 6650-01-122-0169
NSN 6110-00-895-6034
NSN 6610-00-633-4338
NSN 5975-00-621-0152
NSN 6105-01-131-6596
NSN 6685-01-104-8791
NSN 5945-01-519-8887
NSN 5990-01-080-0097
NSN 6220-01-531-0836
NSN 5855-01-210-7636
NSN 5925-00-468-2757
NSN 4140-01-168-7685