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 6220-01-396-8901
NSN 4140-00-253-1801
NSN 5895-01-465-8448
NSN 5960-00-028-3558
NSN 2925-00-225-5386
NSN 6620-01-089-4416
NSN 5895-01-399-0240
NSN 5965-01-398-9579
NSN 6135-01-517-6060
NSN 5960-00-195-4448
NSN 6685-01-467-8789
NSN 6135-01-433-2062