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 7035-01-555-7070
NSN 6150-00-454-8295
NSN 6320-00-082-5868
NSN 5925-01-475-1832
NSN 6240-00-786-6170
NSN 5905-00-706-0775
NSN 6685-01-109-5156
NSN 5990-00-785-8601
NSN 5935-00-188-8192
NSN 6620-01-401-5356
NSN 5855-00-149-0766
NSN 5945-00-918-4268