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 6110-01-281-3749
NSN 6240-00-456-2578
NSN 5910-00-806-5275
NSN 6645-01-616-8996
NSN 5975-00-337-0448
NSN 5835-00-891-2784
NSN 6320-00-036-3688
NSN 6135-00-862-5736
NSN 5999-00-894-4632
NSN 5950-01-370-9174
NSN 6650-00-190-5158
NSN 6150-01-398-2155