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 6240-01-307-0269
NSN 5935-01-154-1010
NSN 5999-01-248-8736
NSN 5910-00-541-1381
NSN 5835-01-203-8295
NSN 5985-01-544-6245
NSN 5985-00-764-9697
NSN 6240-00-087-0226
NSN 6685-01-165-5539
NSN 5935-00-102-1552
NSN 5920-01-215-0497
NSN 5950-01-070-2465