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 5905-00-752-3361
NSN 5920-01-452-4542
NSN 5950-01-441-2143
NSN 2925-01-236-3547
NSN 5999-01-252-0295
NSN 5855-00-004-0904
NSN 5950-01-345-1883
NSN 5920-01-459-8493
NSN 5910-00-676-0729
NSN 6135-01-572-7548
NSN 5835-00-173-4456
NSN 6135-00-221-4720