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 6150-01-521-2403
NSN 5985-00-452-2228
NSN 5945-00-088-5695
NSN 5999-01-487-5668
NSN 5935-00-931-4037
NSN 5945-01-166-7955
NSN 5945-00-809-0919
NSN 5975-00-518-1733
NSN 5835-00-327-6192
NSN 6110-01-475-0371
NSN 6685-00-707-4842
NSN 5835-01-509-8992