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 6150-00-386-1996
NSN 5990-00-131-3269
NSN 5950-00-246-6362
NSN 5925-01-645-9136
NSN 6135-00-851-8575
NSN 5935-01-262-1020
NSN 5855-01-500-0449
NSN 5935-01-634-0668
NSN 6110-01-416-1748
NSN 5835-00-876-4544
NSN 5975-01-282-6254
NSN 2925-01-571-6062