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 5975-00-242-6707
NSN 5965-01-237-3342
NSN 6240-00-594-7138
NSN 5975-00-998-1358
NSN 6130-01-252-8823
NSN 5910-01-106-3261
NSN 5910-01-313-8394
NSN 5950-00-035-8791
NSN 5910-01-209-3547
NSN 2925-00-798-2663
NSN 5855-01-510-2898
NSN 5905-01-347-3588