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One of the most important metrics for evaluating the cold temperature sealing capabilities of elastomer materials—especially O-rings and comparable seals—is the TR10-value, which is established by ASTM D 1329 or ISO 2921 standards. This figure is the temperature at which a stretched specimen recovers by 10% after being exposed to freezing conditions, usually by 25% or 50%.
Practically speaking, the TR10-value is a good predictor of when O-rings will start to lose their ability to seal in cold environments. At low temperatures, O-rings often hold their seal until the temperature reaches the TR10-value, even in dynamic or pressure-loaded circumstances.
Normal test pieces cut from test slabs are used to calculate the TR10-value. On O-rings with particular parameters, such as a cord thickness of up to 3.53 mm and an inner diameter of at least about 15 mm, it may also be tested directly.
The TR10-value is very useful from an application-specific standpoint, providing insightful information about how well elastomer materials operate at low temperatures. It is frequently regarded as a basic material characteristic for determining appropriateness in sealing applications.
Techniparts' O-Ring Test Laboratory is one of the specialist locations where the TR10-value determination may be done. These labs have all the tools and knowledge required to precisely test and examine the properties of elastomer materials at low temperatures.
The TR10 test offers a number of noteworthy benefits, one of which is its capacity to illustrate the elastomer samples' ongoing defrosting behavior. Engineers and researchers may evaluate temperature-dependent elasticity and choose the best material by comparing TR10-values of various materials. For example, analyzing the temperature differential between TR10- and TR70-values sheds light on how quickly rubber materials regain their elasticity.
In conclusion, the TR10 test is an essential instrument for assessing how well elastomer materials seal at low temperatures, especially for O-ring and sealing applications. It is an essential tool for researchers and engineers trying to improve sealing systems for a range of operating circumstances because of its extensive acceptance in industry standards and its capacity to yield insightful information.