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 5996-01-275-6444
NSN 5985-00-401-5021
NSN 2925-01-143-0092
NSN 6145-00-220-2691
NSN 6240-00-488-0278
NSN 6620-01-395-4878
NSN 5915-01-259-1517
NSN 5999-01-479-3919
NSN 6130-01-514-8081
NSN 5999-00-955-5704
NSN 6620-01-468-6017
NSN 6645-01-464-4546