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 5990-01-322-9781
NSN 5930-01-573-2119
NSN 6240-00-072-9966
NSN 5935-01-222-1717
NSN 5975-01-110-1246
NSN 5835-00-770-2843
NSN 6220-00-156-0860
NSN 5855-01-332-3011
NSN 5975-01-367-4161
NSN 5855-00-763-2155
NSN 6145-01-211-3607
NSN 5925-01-366-1915