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 5950-00-537-6634
NSN 5855-00-688-9954
NSN 6685-01-361-9979
NSN 5999-00-568-5866
NSN 6110-00-756-3784
NSN 6645-01-396-6976
NSN 6645-00-947-0625
NSN 6610-01-493-4936
NSN 5915-01-273-7966
NSN 2925-01-250-2731
NSN 5945-01-592-3379
NSN 5930-00-370-3161