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 5985-01-129-3040
NSN 5935-01-594-2422
NSN 5925-01-391-1014
NSN 5925-01-523-9056
NSN 6620-01-557-6512
NSN 5965-01-322-3271
NSN 5935-01-282-1566
NSN 7035-01-633-9537
NSN 5960-00-349-7650
NSN 5835-00-834-1286
NSN 5925-01-555-0702
NSN 5920-00-541-1119