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 5895-01-391-7200
NSN 7035-01-431-4560
NSN 5999-01-407-1087
NSN 5855-00-433-2377
NSN 5920-01-624-2580
NSN 5835-00-482-0924
NSN 6135-00-162-2437
NSN 5935-00-078-4796
NSN 6220-01-607-6548
NSN 5965-01-225-7974
NSN 5998-00-132-7951
NSN 5985-01-158-2557