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 6145-01-087-0824
NSN 6110-00-900-3970
NSN 6110-01-204-0000
NSN 6220-00-577-3435
NSN 5975-01-228-7178
NSN 5965-01-619-2542
NSN 6105-01-212-9041
NSN 6685-00-707-4842
NSN 5920-01-238-8559
NSN 5855-01-235-5491
NSN 5835-01-647-6426
NSN 6240-00-943-7560