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 5950-01-162-0808
NSN 2925-01-064-3729
NSN 5935-01-264-8956
NSN 5920-01-177-2573
NSN 5925-01-475-9299
NSN 5910-00-097-8942
NSN 5925-00-446-2464
NSN 6220-01-481-5906
NSN 6650-01-265-0650
NSN 5920-01-205-3442
NSN 2925-01-381-5307
NSN 5935-01-376-5551