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 6135-00-191-6444
NSN 6650-01-428-2251
NSN 5915-01-623-7594
NSN 5915-01-559-6044
NSN 6130-01-232-0742
NSN 6145-00-846-8173
NSN 6130-01-436-5185
NSN 2925-01-100-3694
NSN 6240-00-079-0112
NSN 6110-00-229-5541
NSN 5925-00-001-7446
NSN 5925-01-437-7528