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 5945-01-378-1372
NSN 5925-01-548-6033
NSN 5930-01-509-0531
NSN 5950-00-369-9558
NSN 5990-00-177-2924
NSN 6105-01-630-8922
NSN 5960-01-196-9203
NSN 5835-01-205-6614
NSN 5950-01-631-1793
NSN 5835-00-888-9422
NSN 5930-01-382-8213
NSN 5998-00-334-8781