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 6320-01-144-3810
NSN 5945-01-058-6794
NSN 6620-01-288-2627
NSN 6220-01-310-5706
NSN 5950-00-298-2042
NSN 5975-01-258-5807
NSN 6320-01-190-1397
NSN 5996-01-055-5247
NSN 5905-01-136-7432
NSN 5990-00-067-6791
NSN 5950-01-462-4657
NSN 5996-01-067-6605