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 5965-01-253-8699
NSN 5999-01-256-6046
NSN 4140-01-025-1555
NSN 5835-01-215-5961
NSN 6650-01-053-8726
NSN 5930-01-046-7475
NSN 5998-01-473-4373
NSN 5945-00-946-6803
NSN 5925-01-252-3914
NSN 5905-01-336-9779
NSN 5950-00-944-1109
NSN 5999-00-584-4577