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 6150-00-793-7831
NSN 5925-01-215-7324
NSN 5945-01-360-0646
NSN 6145-01-225-4904
NSN 6645-01-431-4545
NSN 5950-01-564-7699
NSN 5985-00-275-2830
NSN 4140-01-589-2215
NSN 6110-01-120-5106
NSN 5895-01-504-1054
NSN 5915-00-870-0162
NSN 6145-00-901-7760