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 5925-01-185-1390
NSN 2925-00-258-9786
NSN 5835-00-451-2982
NSN 5895-01-253-2588
NSN 5935-01-421-4418
NSN 5999-01-177-8243
NSN 6685-00-696-6411
NSN 5999-01-116-1987
NSN 7035-01-092-5723
NSN 5855-01-175-3990
NSN 6150-00-132-1640
NSN 5999-01-622-0691