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 5985-01-364-4386
NSN 5960-00-240-3171
NSN 6620-01-532-0329
NSN 6135-00-926-3503
NSN 6685-00-989-0658
NSN 6240-01-495-3676
NSN 5945-01-233-9437
NSN 5935-01-033-0487
NSN 5999-00-728-0400
NSN 6145-00-432-4840
NSN 6130-00-156-7751
NSN 6320-01-170-4068