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 5910-01-230-6271
NSN 6620-01-164-4913
NSN 5960-01-509-8779
NSN 5930-00-609-3386
NSN 5920-01-623-4108
NSN 4140-00-010-2986
NSN 6610-00-841-8221
NSN 5998-00-920-5685
NSN 2925-01-448-2880
NSN 5935-01-092-4265
NSN 6610-01-514-7181
NSN 6135-01-210-8715