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 5935-01-444-1742
NSN 5990-01-327-1558
NSN 6320-01-113-7647
NSN 6130-00-942-2886
NSN 5960-01-003-0815
NSN 6685-01-496-2367
NSN 6150-01-221-7845
NSN 5915-00-915-9193
NSN 6130-00-068-4023
NSN 6150-00-824-8626
NSN 6645-00-633-3824
NSN 5920-00-878-0790