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 5960-01-315-0676
NSN 5925-01-048-7656
NSN 5935-00-275-0888
NSN 5855-01-229-3864
NSN 5975-00-164-3914
NSN 5915-00-203-2859
NSN 6240-00-565-9141
NSN 6320-01-032-9703
NSN 5998-00-235-4074
NSN 5990-01-170-6081
NSN 5945-01-025-5956
NSN 6620-00-361-3590