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 5945-00-170-8645
NSN 5935-01-308-3527
NSN 6620-01-225-1059
NSN 6105-01-583-3982
NSN 6145-01-050-7531
NSN 5895-01-220-4765
NSN 2925-00-941-3708
NSN 5925-00-209-0435
NSN 6145-01-253-5969
NSN 5975-00-696-2597
NSN 5935-01-441-6498
NSN 5998-01-295-3975