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 6130-01-345-0350
NSN 6105-01-138-1638
NSN 6685-01-045-5766
NSN 5990-01-248-0108
NSN 6320-01-141-3791
NSN 5920-01-366-2513
NSN 5925-01-467-2668
NSN 6220-01-352-0396
NSN 5985-01-398-0004
NSN 5965-01-309-1084
NSN 4140-00-327-5445
NSN 6135-01-265-1384