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 6135-00-170-8819
NSN 5960-01-386-7086
NSN 6105-01-011-5210
NSN 5985-01-100-5599
NSN 5835-01-231-4994
NSN 5950-01-531-3107
NSN 6320-00-358-1946
NSN 5935-01-265-3488
NSN 5945-00-314-6866
NSN 2925-00-203-8735
NSN 5835-00-080-8213
NSN 5996-01-442-8751