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 5975-00-472-6042
NSN 5910-01-103-9534
NSN 5895-01-145-0532
NSN 6150-01-435-5026
NSN 5920-00-964-9986
NSN 6135-00-170-8819
NSN 5855-00-138-2386
NSN 7035-01-521-3449
NSN 2925-00-486-8640
NSN 5915-00-796-2847
NSN 5915-01-555-0034
NSN 5950-01-422-1361