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 5960-01-278-2852
NSN 6145-01-138-5231
NSN 6610-01-255-1433
NSN 5965-00-772-8024
NSN 5975-01-552-4932
NSN 6685-01-487-4209
NSN 5925-01-105-3914
NSN 5915-00-472-9704
NSN 5930-01-478-3903
NSN 5930-01-441-9882
NSN 5905-00-824-8582
NSN 6650-01-540-5157