Vulcanized and Spliced O Rings are a great solution for OEMs and other companies with complex o-ring applications. The splicing process is performed using several different techniques. These techniques include Thermobonding, Cold vulcanization, and Thermobonding. These methods are the most common and can save a significant amount of money.

Cold vulcanization

Vulcanization is the process used to create o-rings, combining an uncured compound, adhesive, time, and heat to produce a durable bond. The process begins by placing the mating ends of the cord material in a special splicing jig. Next, the o-ring is removed from the tool, cleaned, and de-flashed. Finally, the o-ring is vulcanized using heat, pressure, and time.

The splicing process involves applying a non-conductive adhesive to the mating ends of the cord material. The ends of the o-rings are then joined together in a mold at a high temperature for a specified period of time, creating a strong molecular bond. The process is particularly sensitive to large o-rings, which are particularly vulnerable to damage. Cold vulcanization of spliced o rings is an ideal method for large-scale production runs.

Cold bonding

Cold bonding of spliced O rings is a common method for making electrical connectors and other products. This technique involves applying a non-conductive adhesive to the ends of the cord. The method offers several benefits, including shorter lead times and a lower cost per part. However, this process can also cause problems due to improper o ring splicing. Therefore, proper care must be taken when performing the process.

This technique produces an o-ring from extruded o-ring cord stock without heat or pressure. The mating ends of the cord material are placed into a jig. The ends are then covered with a non-conductive adhesive. Once the mating ends are sealed, they are pressed together in a mold at a high temperature for a specified time. The process results in a strong molecular bond between the two pieces of cord material. This method is commonly used on low-durometer, foam or low-temperature elastomers.


While cold bonding has many advantages, it can be less flexible and less expensive than thermobonding. Cold bonding is a good choice if you are not concerned about the final fit. Thermobonding does not produce visible marks, but it can take longer to complete. Moreover, the adhesive used for cold bonding does not cure at the same rate as thermobonding.

Vulcanised EMI o rings can provide reliable shielding for many applications. However, these o rings must be bonded by experienced gasket fabricators. The process of vulcanisation involves applying heat to the cut lengths and pressing them into a vulcanising press. Vulcanised EMI o rings are extremely reliable, but are not perfect. As a result, they should be used in static, non-pressurised environments.

EMI spliced o-rings

Evaluating the cost-effectiveness of EMI spliced o rings is important when evaluating the efficiency of your system. Spliced o-rings are made from a special blend of rubbers, allowing you to choose the best combination for your application. These EMI gaskets are vital to the success of your system. The splicing process involves cutting and bonding the two halves of the gasket together. The resulting o-rings have high tensile strength and are designed to meet tight tolerances. They are manufactured with a proprietary adhesive, allowing for quick and easy turnaround times.

While EMI spliced O-rings are not as durable as molded gaskets, they offer superior shielding performance. While choosing EMI spliced O-rings, you should look for vulcanised or cold-bonded materials. The vulcanizing process uses a high-grade silicone adhesive to attach the two pieces of elastomer. This method is not suitable for high-volume production, as it requires more tooling.

Variations of vulcanized o-rings

Vulcanized o-rings are a versatile sealing solution for many different applications. They can be used in almost any application where a flange or lid needs to seal tightly. They can also seal rectangular containers, if the groove is shaped correctly. But if you need the tightest seal possible, you should go for bevel cut vulcanized o-rings.

The process begins with choosing the right O-Ring cord for the application. Each material has different properties and reacts differently to different environments. Choosing the wrong material could damage the equipment and cause it to fail prematurely. Luckily, APG manufactures a wide variety of vulcanized o-rings for the industrial, commercial, and consumer markets. In fact, APG offers its own unique rubber material called Aflas, which has a wide range of resistive properties.