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 5935-01-408-6308
NSN 2925-01-194-9737
NSN 5925-01-511-4405
NSN 6240-00-364-0850
NSN 6130-01-341-9690
NSN 5915-01-131-0094
NSN 6220-01-015-2956
NSN 5835-01-138-0181
NSN 6220-00-165-5859
NSN 6240-00-218-1480
NSN 5925-00-660-7589
NSN 6220-01-252-9285