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 5999-01-634-0576
NSN 7035-01-444-4240
NSN 2925-01-202-7235
NSN 5950-01-520-5165
NSN 6110-00-424-4557
NSN 7035-01-429-7954
NSN 5915-01-518-1551
NSN 6620-01-411-5750
NSN 7035-01-056-5350
NSN 7035-01-633-9537
NSN 6620-00-104-6937
NSN 5925-00-824-0329