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 5965-01-468-0587
NSN 5855-01-223-0833
NSN 6150-01-398-8581
NSN 5950-01-403-2852
NSN 5925-00-710-1664
NSN 6145-00-959-2868
NSN 5930-01-160-7069
NSN 2925-00-781-1273
NSN 5945-01-547-4585
NSN 5950-01-089-9513
NSN 5910-00-829-3858
NSN 5985-01-427-3734