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 6105-01-555-8479
NSN 5935-01-133-0442
NSN 5910-00-802-3657
NSN 6130-00-111-7214
NSN 5935-01-184-9361
NSN 5975-00-225-1881
NSN 6240-00-233-3481
NSN 5985-00-528-1902
NSN 5910-01-446-8497
NSN 4140-01-481-1287
NSN 5925-01-165-7053
NSN 5960-00-287-9932