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 6645-01-010-3746
NSN 6220-01-445-6575
NSN 5950-01-620-9003
NSN 5835-00-122-6476
NSN 5895-01-189-1631
NSN 6135-00-231-7257
NSN 5975-00-257-2793
NSN 4140-00-660-8699
NSN 6135-01-544-8463
NSN 5930-00-943-9547
NSN 5935-00-302-7596
NSN 6135-01-481-9031