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 5930-01-141-7740
NSN 6220-00-599-4100
NSN 6240-01-282-0983
NSN 5996-01-512-2040
NSN 2925-00-833-9466
NSN 6320-01-149-6658
NSN 5996-00-923-7327
NSN 6610-00-589-6816
NSN 5915-00-338-3375
NSN 5920-00-019-0259
NSN 5990-01-497-0093
NSN 6240-01-109-4680