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 5965-00-261-8086
NSN 5945-01-473-1348
NSN 5945-00-100-1261
NSN 5975-00-481-3681
NSN 5990-01-553-6859
NSN 7035-00-413-0992
NSN 6220-01-311-5764
NSN 7035-00-731-8729
NSN 5945-01-342-4501
NSN 5950-00-249-9146
NSN 6620-01-512-3032
NSN 6320-01-426-8947