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 6105-01-038-4084
NSN 6620-00-826-7238
NSN 5910-00-881-3400
NSN 5975-01-389-6496
NSN 5960-00-445-3954
NSN 5999-01-244-0564
NSN 6645-01-172-6838
NSN 5835-00-660-4523
NSN 6105-01-512-2756
NSN 6685-00-827-3407
NSN 5925-01-640-8752
NSN 5920-01-620-8490