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 5855-01-526-0131
NSN 5925-00-111-1969
NSN 5985-01-230-4252
NSN 5895-01-626-1709
NSN 5985-00-614-2744
NSN 5905-00-761-7122
NSN 5920-01-365-5878
NSN 5895-00-487-0754
NSN 5930-00-285-2799
NSN 6610-00-070-9661
NSN 6105-00-759-5509
NSN 5935-01-604-8075