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 5930-00-104-6148
NSN 5920-00-303-5290
NSN 5990-01-209-3955
NSN 6620-01-655-4591
NSN 5915-01-100-1180
NSN 5950-00-099-9612
NSN 5960-00-071-0698
NSN 6650-00-063-4484
NSN 6650-00-098-6128
NSN 5855-00-256-5562
NSN 2925-01-123-5856
NSN 6685-01-482-4100