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 5855-01-068-3683
NSN 5855-01-244-9785
NSN 5930-01-251-3920
NSN 5925-01-044-5508
NSN 6150-01-233-6612
NSN 6320-01-144-3810
NSN 5855-01-420-4988
NSN 5945-01-578-0924
NSN 2925-01-236-3547
NSN 5996-01-116-1087
NSN 5910-01-237-3873
NSN 6645-00-121-7566