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 5910-01-322-0918
NSN 5920-01-572-1092
NSN 6240-00-233-3481
NSN 4140-00-580-8508
NSN 5835-01-540-4995
NSN 5835-00-007-6824
NSN 6150-01-605-0861
NSN 4140-01-033-1238
NSN 6610-00-139-1105
NSN 6220-00-763-4131
NSN 5999-00-138-1557
NSN 6320-01-287-5345