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 5935-00-905-6986
NSN 6145-00-865-9434
NSN 5935-01-641-9145
NSN 6150-01-197-6993
NSN 5985-01-433-1474
NSN 6150-01-240-0446
NSN 6110-01-275-3759
NSN 5935-00-253-4055
NSN 5999-01-642-2338
NSN 6610-01-157-0426
NSN 6650-00-879-5834
NSN 5925-00-284-3726