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 6130-01-385-5619
NSN 5960-01-495-0859
NSN 6650-00-078-5773
NSN 6130-00-812-6175
NSN 5925-00-509-5184
NSN 5975-00-318-4623
NSN 5930-00-154-7054
NSN 5960-01-599-9821
NSN 5925-01-182-1220
NSN 5835-01-160-3045
NSN 5990-00-186-2445
NSN 6220-01-512-3937