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 6220-00-491-4163
NSN 6110-01-381-1269
NSN 5835-01-055-6063
NSN 5965-00-798-3597
NSN 6145-00-853-1648
NSN 5905-01-371-0979
NSN 2925-00-288-1394
NSN 5910-00-171-3058
NSN 6610-01-432-5144
NSN 6220-01-200-8051
NSN 5835-01-310-8979
NSN 5930-01-435-1207