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 5915-00-006-1255
NSN 5950-01-220-5569
NSN 5910-01-004-0883
NSN 4140-00-498-6867
NSN 5930-01-472-3953
NSN 6130-00-132-0483
NSN 6220-01-242-6702
NSN 7035-00-890-7649
NSN 5965-01-633-8849
NSN 4140-01-273-0196
NSN 5925-01-103-8322
NSN 5905-01-114-6987