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At Longman Mills, our commitment to quality is fortified by state-of-the-art testing facilities. Our rigorous testing processes guarantee the durability, resilience, and performance of our products across various industries.
A DIN abrasion tester is a device that measures the abrasion resistance of rubber materials, such as tires, soles, or hoses. It works by rubbing a rubber sample against an abrasive sheet mounted on a rotating drum, and calculating the volume loss or resistance index of the sample. The DIN abrasion test conforms to the standards ISO 4649 and ASTM D5963
A rubber ageing resistance oven is a device that simulates the effects of heat and oxygen on rubber materials over time. It is used to test the durability and performance of rubber products under various environmental conditions.
One of the international standards for rubber ageing resistance tests is ISO 188 which specifies two methods: Method A (air-oven method using a cell-type oven or cabinet oven with low air speed and a ventilation of 3 to 10 changes per hour) and Method B (air-oven method using a cabinet oven with high air speed and a ventilation of more than 100 changes per hour)These methods are designed to estimate the relative resistance of rubber to deterioration with the passage of time, by measuring the changes in physical properties such as tensile strength, elongation, hardness.
A digital Vernier caliper is a device that can measure the length, width, depth, or diameter of various Specimen with high precision and accuracy. The ASTM standards that applies to digital Vernier calipers is ASTM E2544-11
A universal testing machine (UTM) is a device that can test the mechanical properties of materials, such as tensile strength, compressive strength, bending strength, and shear strength. It works by applying a controlled force or stress to a sample, and measuring the resulting deformation or response. . The ASTM standards that applies Universal testing machine is ASTM D-412
A fatigue testing machine for rubber is a device that applies cyclic loading to a rubber material or component to measure its durability and lifespan under different stress conditions. ASTM D430 - Standard Test Methods for Rubber Deterioration—Dynamic Fatigue
A Durometer is a device that measures the hardness of soft materials, such as rubber, silicone, and TPEs. It uses a spring-loaded steel rod with a truncated cone tip to press into the material and measure the depth of the indentation. The hardness value ranges from 0 to 100 The ASTM standard for measuring the hardness of soft materials using a Shore A Durometer is ASTM D2240
The examination of resistance to fuel and oil in cured rubber specimens is conducted using equipment such as the Mettler balance and an oven, following the ASTM D471 test method
The assessment of rubber’s permanent deformation under elevated temperatures adheres to the ASTM D39 test procedure
