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 5925-01-595-9800
NSN 5895-01-506-2478
NSN 5975-00-503-9190
NSN 6610-00-225-9886
NSN 5910-01-185-3021
NSN 5999-00-518-1007
NSN 6650-01-606-2277
NSN 4140-01-103-3377
NSN 6320-01-389-8128
NSN 6620-01-266-5545
NSN 5999-01-123-4801
NSN 6220-01-206-1945