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 5905-00-125-2505
NSN 5990-01-092-7879
NSN 6130-01-558-1130
NSN 5920-01-321-1877
NSN 2925-01-273-4898
NSN 6110-01-433-2694
NSN 5925-00-035-4126
NSN 6645-01-047-3026
NSN 5930-01-479-2077
NSN 5855-01-010-4905
NSN 5855-01-369-5037
NSN 5999-01-645-9440