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 5935-01-305-3514
NSN 6650-00-137-5859
NSN 2925-01-448-2880
NSN 6220-00-216-9504
NSN 5999-01-206-1187
NSN 6610-00-122-3743
NSN 6620-01-310-4916
NSN 5910-00-179-5826
NSN 5985-01-075-9134
NSN 5960-01-215-0992
NSN 6610-01-583-4539
NSN 5930-00-804-7844