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 5905-01-626-8452
NSN 6645-00-869-0850
NSN 2925-01-356-3168
NSN 4140-00-104-7323
NSN 5920-01-215-4741
NSN 5985-00-632-2708
NSN 5950-01-453-9476
NSN 5985-01-418-0680
NSN 6240-00-403-1272
NSN 6650-01-384-5161
NSN 6685-00-947-6783
NSN 5965-01-223-3307