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 5985-01-025-0899
NSN 5910-00-080-4180
NSN 5996-01-544-9731
NSN 6145-01-299-4629
NSN 5925-01-208-1515
NSN 5930-01-528-9973
NSN 5895-00-493-0042
NSN 5998-01-542-4609
NSN 5965-00-236-0016
NSN 5855-00-862-3345
NSN 6645-00-235-4685
NSN 5835-01-416-6455