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 6650-00-011-3435
NSN 6240-00-871-8798
NSN 5998-01-026-5599
NSN 5920-01-061-9714
NSN 5935-00-403-2139
NSN 6135-00-686-4777
NSN 6105-01-502-4238
NSN 6645-01-609-7365
NSN 5930-01-420-6183
NSN 5960-01-413-3877
NSN 6145-01-530-2344
NSN 6220-01-524-5966