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 6240-01-160-4370
NSN 5925-00-311-2341
NSN 5960-00-975-2540
NSN 5910-00-551-2442
NSN 6150-00-023-3856
NSN 5905-01-255-4065
NSN 6220-01-164-7654
NSN 6320-01-445-8192
NSN 6320-01-631-7828
NSN 5910-01-584-7278
NSN 5960-01-649-1341
NSN 6150-01-246-0319