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 5960-00-287-9932
NSN 2925-01-054-3190
NSN 5935-00-265-0705
NSN 5920-01-210-2300
NSN 6320-01-564-0893
NSN 5835-01-268-1924
NSN 6240-01-373-1439
NSN 6610-01-131-4508
NSN 5960-00-797-2280
NSN 5998-00-105-6775
NSN 5920-01-173-8212
NSN 5985-00-138-1673