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 6650-00-804-2039
NSN 2925-01-215-5022
NSN 5965-01-346-9014
NSN 6320-01-155-8295
NSN 6685-01-134-3001
NSN 5950-01-587-5969
NSN 5920-01-345-9946
NSN 6105-01-319-8081
NSN 5925-00-041-1935
NSN 5905-01-201-3902
NSN 6620-00-656-5799
NSN 6650-01-530-0589