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 6685-00-265-7530
NSN 6685-01-659-6927
NSN 5996-01-532-1705
NSN 5945-01-332-5636
NSN 5950-01-413-7210
NSN 6220-01-151-4240
NSN 6620-00-730-8699
NSN 6610-01-433-2219
NSN 6240-01-345-3263
NSN 6150-01-237-6688
NSN 6105-01-603-5263
NSN 5920-01-484-9924