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 5920-00-538-7915
NSN 6110-01-123-5125
NSN 5985-01-156-8783
NSN 5930-01-433-2806
NSN 5910-00-896-5209
NSN 5975-01-476-0906
NSN 5990-01-263-0362
NSN 5965-01-249-6349
NSN 6105-01-643-6024
NSN 6610-00-773-3004
NSN 5965-01-101-9094
NSN 5999-00-498-2754