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 6150-01-445-6423
NSN 2925-00-934-8383
NSN 5855-00-337-3679
NSN 5998-01-559-0998
NSN 5975-00-934-8885
NSN 7035-00-834-2090
NSN 5925-01-180-9353
NSN 6110-01-116-7316
NSN 6130-01-435-0879
NSN 5950-01-410-7685
NSN 6610-00-199-5357
NSN 6620-01-097-7078