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 5999-00-420-0791
NSN 5835-01-629-2044
NSN 6610-00-614-1703
NSN 5835-00-723-2505
NSN 7035-01-304-4138
NSN 6150-01-287-9643
NSN 6130-00-573-8807
NSN 6610-00-253-7676
NSN 5895-01-089-8171
NSN 5925-00-426-9063
NSN 5855-00-198-3197
NSN 5985-01-654-6431