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 2925-01-033-8948
NSN 5910-01-413-6356
NSN 6620-00-182-7638
NSN 4140-01-248-9168
NSN 5996-00-753-1599
NSN 5945-01-532-9038
NSN 6610-01-433-2219
NSN 5996-00-336-3046
NSN 5855-00-132-4898
NSN 6220-01-496-1925
NSN 5915-00-476-5977
NSN 5910-00-759-1374