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 5855-00-149-0766
NSN 4140-01-031-0286
NSN 5965-00-589-1228
NSN 6220-01-327-2817
NSN 5930-01-087-1663
NSN 6240-01-495-1912
NSN 6110-00-578-7243
NSN 6135-01-121-3225
NSN 6105-01-093-5677
NSN 7035-01-498-4895
NSN 5835-00-958-6231
NSN 5925-01-207-8542