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 6620-00-452-5738
NSN 5905-01-435-7327
NSN 5999-01-209-9224
NSN 5855-01-634-0259
NSN 5920-00-905-4769
NSN 6130-01-408-2682
NSN 5950-00-597-3661
NSN 6645-00-485-1440
NSN 6240-00-753-7586
NSN 5905-01-482-1575
NSN 5990-01-457-6316
NSN 6610-00-773-3004