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 5960-01-425-1454
NSN 6240-00-740-8901
NSN 7035-01-192-2659
NSN 5910-01-293-6999
NSN 6220-00-853-5595
NSN 5855-01-598-7392
NSN 5950-00-024-8786
NSN 6645-01-606-7684
NSN 6650-01-010-4204
NSN 5996-01-525-9478
NSN 5975-00-343-0370
NSN 6220-01-252-3458