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 5895-00-501-0890
NSN 6620-01-640-6761
NSN 5835-00-510-0890
NSN 6685-00-160-6390
NSN 5925-01-596-2796
NSN 4140-01-425-6409
NSN 2925-01-334-7122
NSN 6220-01-019-2947
NSN 5855-00-256-5562
NSN 5855-01-268-6468
NSN 5935-00-711-0715
NSN 5975-01-416-3953