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 5945-01-645-7354
NSN 5925-01-558-9577
NSN 5920-01-203-6952
NSN 2925-01-459-8093
NSN 5915-00-955-9981
NSN 5910-01-420-8937
NSN 6135-00-593-6831
NSN 5925-00-363-9578
NSN 5835-00-126-2961
NSN 5915-01-147-5906
NSN 6240-00-042-7136
NSN 6620-01-374-4382