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 5965-01-426-3225
NSN 4140-01-217-6290
NSN 6145-01-191-8318
NSN 5975-01-094-6943
NSN 5935-00-826-8953
NSN 5996-01-282-4334
NSN 5930-00-471-4919
NSN 6145-00-873-4808
NSN 5905-01-579-3060
NSN 5975-01-299-5835
NSN 6240-00-051-8474
NSN 6650-01-275-0207