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 5999-00-369-1623
NSN 6135-01-611-0125
NSN 5990-01-212-2037
NSN 6130-01-068-4002
NSN 6240-01-348-0057
NSN 4140-01-381-3221
NSN 6645-01-304-0889
NSN 6110-00-287-9158
NSN 6130-01-650-5408
NSN 2925-01-149-2865
NSN 5925-00-702-1924
NSN 6135-00-161-0746