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 5960-00-138-1651
NSN 5975-01-479-9960
NSN 4140-00-630-2153
NSN 6610-00-076-0801
NSN 5998-01-268-0369
NSN 7035-01-173-1513
NSN 6240-01-447-8088
NSN 5975-01-627-5714
NSN 5855-01-513-9601
NSN 5950-01-524-6851
NSN 5930-01-175-8359
NSN 5990-00-125-5036