landefeld fasteners Germany landefeld model landefeld price

landefeld fasteners are made by integrally bonding and vulcanizing a rubber ring and a metal ring. They are sealing rings used to seal threaded and flange connections. The ring consists of a metal ring and a rubber gasket. The metal ring is treated for rust prevention, and the rubber ring is generally made of oil-resistant nitrile rubber or fluororubber. Combined gaskets are available in metric and imperial sizes, with standards specifying the combination form of the metal gasket and rubber. Combined sealing gaskets are used for sealing threaded pipe fittings and plugs. They are generally used together with bite-type pipe fittings to seal oil ports, mainly for static face sealing at the threaded connections of hydraulic valve pipe fittings. They are suitable for static face sealing at British and American standard imperial thread connections and French and German standard metric thread connections.

landefeld fasteners applications

A type of fastener with a flat circular ring shape. Placed between the support surface of a bolt, screw, or nut and the surface of the connected part, it serves to increase the contact surface area of the connected parts, reduce pressure per unit area, and protect the surface of the connected parts from damage. Another type, elastic washers, also serves to prevent nuts from loosening. Washers and retaining rings are elastic pads or anti-loosening washers that prevent bolts from loosening. The working principle of anti-loosening washers is very simple. It consists of two washers. The outer side has radial convex patterns, while the inner side has inclined teeth. During assembly, the inner inclined tooth faces are opposite each other, and the outer radial convex patterns engage with the contact surfaces on both ends. When the connected parts are subjected to vibration and the bolt tends to loosen, only relative sliding between the inner inclined tooth faces of the two washers is allowed, generating lifting tension, thereby achieving 114% locking.

landefeld fasteners widely applied

Also used in faucets (valves) to cut off the flow of liquids or gases. Rubber or silicone gaskets can also be used to reduce fan vibration. Typically, the outer diameter of the washer is about twice the inner diameter. Nitrile rubber is the most commonly selected material for rubber gaskets due to its highest cost-performance ratio. The use of rubber gaskets is generally in more advanced fields, such as aerospace and rocketry. However, their performance is excellent and can surpass many metal materials. Various types of fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters, and supplies. Their characteristics include a wide variety of specifications, diverse performance and uses, and a high degree of standardization, serialization, and generalization. Therefore, some people refer to a class of fasteners that already have national standards as standard fasteners, or simply as standard parts.

landefeld fasteners features

Ensures that the clamping force of the connected parts is maintained under strong vibration, superior to fasteners that rely on friction for self-locking; prevents bolt loosening caused by vibration, eliminating related problems caused by loose fasteners; no special installation work is required, easy to install and disassemble; temperature changes will not cause the connected parts to loosen; durable; reusable. Improves the anti-loosening level through structural anti-loosening methods, offering higher safety performance; prevents loosening caused by vibration and dynamic loads; Easy to install, does not affect changes in installation drawings, and easy to disassemble; the loosening torque is greater than the tightening torque; The locking effect is not affected by lubrication, and increased lubrication improves the anti-loosening effect; has the same temperature characteristics as standard bolts and nuts; can be reused a limited number of times.

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