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 4140-01-125-1374
NSN 6220-01-237-6776
NSN 6110-00-630-5255
NSN 5935-01-393-6867
NSN 5930-01-087-4288
NSN 5855-00-127-5559
NSN 6240-00-292-3237
NSN 5999-01-152-5202
NSN 5950-01-575-8309
NSN 5925-01-237-9103
NSN 5965-00-452-0967
NSN 5935-01-045-3799