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 6150-01-474-9051
NSN 6620-00-752-8777
NSN 6320-00-500-4172
NSN 5925-00-462-2419
NSN 5975-00-877-6957
NSN 5895-01-012-4110
NSN 5935-01-383-4924
NSN 6105-00-969-4644
NSN 2925-01-580-8072
NSN 6240-01-153-2861
NSN 5945-01-381-1356
NSN 5960-00-010-5300