{"id":54,"date":"2016-05-12T16:41:13","date_gmt":"2016-05-12T16:41:13","guid":{"rendered":"http:\/\/www.globaloring.com\/?p=9"},"modified":"2025-10-09T15:17:32","modified_gmt":"2025-10-09T20:17:32","slug":"what-are-spliced-vulcanized-o-rings","status":"publish","type":"post","link":"https:\/\/www.globaloring.com\/blog\/what-are-spliced-vulcanized-o-rings\/","title":{"rendered":"What Are Spliced & Vulcanized O-Rings?"},"content":{"rendered":"

Spliced and vulcanized o-rings are made from extruded cord stock that has been cut and bonded together, as opposed to molded o-rings; those that have been compression or injection molded as one piece. Vulcanized o-rings are an excellent choice for static sealing applications when molded o-rings<\/a><\/strong> cannot be used due to large or non-standard dimensions, when only a few pieces are needed, or when you need an o-ring right away and cannot wait the standard lead time for molded production. Vulcanized o-rings can be made from a range of elastomers and in virtually any size.<\/p>\n

\"o-ringTo make a vulcanized o-ring, continuous length cord is cut to length and then joined together. A bonding agent is applied to the ends which are then joined together in a mold at a high temperature for a specified period of time.\u00a0 This process forms the molecular bond necessary to create a strong joint.<\/p>\n

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Advantages and Limitations of Spliced & Vulcanized O-Rings<\/h2>\n

\"vulconizingVulcanized o-rings are a good choice for static sealing applications, or ones where the o-ring does not come in contact with moving parts. They are not recommended in dynamic applications, where the o-ring is subjected to the stress of moving parts.\u00a0 Vulcanized o-rings also may not be a good choice for those who need very large quantities of o-rings. In this case, it could be more cost-effective to create tooling and buy custom molded o-rings.<\/p>\n

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Different Options for Spliced & Vulcanized O-Rings<\/h2>\n

\"splicingThere are several key characteristics that define any vulcanized o-ring:<\/p>\n

Material<\/strong> – type of rubber, color, durometerCross Section (CS) – thickness of the cord<\/p>\n

Cut Length<\/strong> (CL) – calculated based on the desired diameter of the o-ring. See below.<\/p>\n

Cut Angle:\u00a0<\/strong>Butt Cut<\/em> (default) is a 90 degree cut where the cord is cut straight from top to bottom.\u00a0Bevel Cut<\/em> (additional charge) is a 45 degree angle cut, also called a skive cut. This cut is used in order to have more of the material\u2019s surface area in contact at the joint to make it stronger.<\/p>\n

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How to Calculate Cut Length<\/h2>\n

\"cut_length\"Since an o-ring is a circular shape, you must calculate the circumference, or the length of cord needed to form the o-ring with the desired diameter.\u00a0 Some commonly used terms for vulcanized o-rings include:<\/p>\n