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 6645-01-447-4139
NSN 6685-01-506-0565
NSN 5996-01-546-2025
NSN 6220-01-317-8822
NSN 6135-01-294-2131
NSN 5990-01-215-0590
NSN 6645-01-116-2037
NSN 5930-01-327-3227
NSN 5905-01-472-0860
NSN 5998-01-155-0892
NSN 6240-00-248-6517
NSN 5960-00-611-1691