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 5945-01-170-0553
NSN 5835-01-138-8622
NSN 4140-01-572-6390
NSN 5895-01-259-5643
NSN 6145-00-781-0018
NSN 5930-01-553-5437
NSN 5835-01-459-8664
NSN 5915-01-085-0048
NSN 6220-00-267-6940
NSN 5895-01-116-6371
NSN 5920-01-451-1972
NSN 5965-00-175-8972