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 5935-01-472-4310
NSN 5895-01-500-5730
NSN 5910-01-181-1577
NSN 6320-00-336-9123
NSN 5975-00-938-3794
NSN 5960-00-284-7916
NSN 5855-01-446-1936
NSN 6105-01-212-3857
NSN 6150-01-306-5527
NSN 6110-00-170-6520
NSN 5925-00-862-6719
NSN 6320-01-159-2211