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 5935-01-196-0071
NSN 6105-00-451-6563
NSN 5975-01-177-0208
NSN 6110-01-513-0758
NSN 5985-00-520-9463
NSN 5925-00-878-4077
NSN 6320-01-215-6459
NSN 5905-01-474-5966
NSN 2925-00-496-9082
NSN 6610-00-315-9315
NSN 5930-00-175-2544
NSN 5999-01-170-4072