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 5905-01-159-4933
NSN 5905-00-436-0744
NSN 5925-01-013-2696
NSN 6135-00-412-1687
NSN 6240-01-595-6812
NSN 6645-01-080-3510
NSN 5990-01-315-3754
NSN 5920-01-383-9468
NSN 5985-01-046-1115
NSN 6150-01-631-9764
NSN 2925-01-424-0235
NSN 5855-01-020-7982