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 5930-01-451-3074
NSN 5985-00-437-6444
NSN 5960-00-188-8648
NSN 7035-01-416-5910
NSN 5925-01-442-3792
NSN 5920-01-046-1062
NSN 6610-01-422-1322
NSN 7035-01-398-9581
NSN 6105-00-443-2653
NSN 6320-00-149-7570
NSN 5999-01-076-4692
NSN 5910-01-592-2746