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 5855-01-509-6872
NSN 5945-01-576-5974
NSN 5905-01-449-8238
NSN 5975-00-149-0758
NSN 5855-01-100-3272
NSN 6150-01-400-1121
NSN 5925-01-463-8594
NSN 6150-01-571-7046
NSN 6650-01-661-0867
NSN 4140-00-026-5437
NSN 5950-00-141-5973
NSN 5990-00-621-0572