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 6150-01-385-4369
NSN 5945-00-071-3636
NSN 6130-01-046-5238
NSN 5990-01-434-3469
NSN 6240-00-383-7668
NSN 5985-01-614-1968
NSN 5905-01-207-5112
NSN 2925-00-964-7128
NSN 7035-01-194-9482
NSN 5905-01-050-6476
NSN 5855-01-096-0872
NSN 5950-01-322-7135