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 5960-01-399-4327
NSN 6135-01-618-8314
NSN 5975-00-160-2407
NSN 7035-01-386-5722
NSN 4140-01-414-0675
NSN 2925-00-572-0454
NSN 5930-00-336-4615
NSN 5910-00-061-2679
NSN 5985-01-567-0522
NSN 5910-01-432-3495
NSN 5835-01-632-6627
NSN 5855-01-611-8933