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 6110-01-611-4942
NSN 5905-01-495-0147
NSN 6320-00-242-3300
NSN 6645-01-158-3592
NSN 6135-00-221-4720
NSN 5925-00-246-4645
NSN 5915-01-431-5300
NSN 6620-01-515-9597
NSN 5960-01-397-4986
NSN 5990-01-472-2447
NSN 5990-01-584-8363
NSN 5935-00-072-9424