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 5930-01-361-7866
NSN 5920-01-628-4890
NSN 5950-01-481-3116
NSN 5915-01-442-8469
NSN 6645-00-456-7653
NSN 6645-01-195-6207
NSN 6220-01-600-5971
NSN 5996-01-224-9842
NSN 5925-00-155-2587
NSN 6620-01-535-1004
NSN 5975-00-450-1015
NSN 6240-00-522-3998