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 6110-00-410-2576
NSN 6650-00-344-9500
NSN 5950-00-544-9861
NSN 5999-01-335-5750
NSN 5855-00-610-4052
NSN 5996-01-076-7374
NSN 5975-00-574-9727
NSN 6320-00-456-0836
NSN 6150-01-158-7136
NSN 6645-01-152-5207
NSN 6320-01-446-6775
NSN 5925-01-200-7813