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 6220-00-956-0565
NSN 5935-00-892-3059
NSN 5965-01-239-4034
NSN 2925-01-354-1752
NSN 5975-01-127-0457
NSN 5855-00-885-8452
NSN 5910-00-544-0677
NSN 5920-00-259-7294
NSN 6145-01-622-3613
NSN 6620-01-016-8264
NSN 2925-01-359-9818
NSN 5915-00-764-1225