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 5996-01-292-7056
NSN 6610-00-757-6060
NSN 5960-01-418-4875
NSN 6105-01-108-4087
NSN 5905-00-158-9963
NSN 5960-00-379-4466
NSN 5996-01-256-2073
NSN 5930-00-167-8058
NSN 5930-00-969-5526
NSN 6150-01-627-3330
NSN 5985-00-471-5695
NSN 5895-00-096-5187