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 5905-01-489-5756
NSN 5855-01-109-6433
NSN 5925-00-011-4577
NSN 6685-01-407-6445
NSN 6105-00-058-1361
NSN 6610-00-862-1567
NSN 6135-00-891-4944
NSN 5935-01-375-1263
NSN 5975-00-234-7516
NSN 6645-01-481-9140
NSN 5960-00-274-4905
NSN 5920-01-244-9344