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 5855-01-528-2309
NSN 5925-00-678-3789
NSN 6150-00-456-0775
NSN 5990-00-459-5752
NSN 6220-01-386-4769
NSN 4140-00-080-8740
NSN 5835-01-171-9126
NSN 6130-00-184-3758
NSN 6645-00-113-4441
NSN 6620-01-168-8450
NSN 5965-01-266-7968
NSN 6220-00-633-8153