Where Rubber Comes From A majority of the people you talk to would be shocked if you were to tell them where rubber comes from. Natural rubber actually comes from a tree known as Hevea brasiliensis. Hevea brasiliensis originated in Brazil but, now the tree can be found in many countries near the equator such […]
What is Rubber Used For? Rubber is seen in almost every product you see in your daily life. For example, if you drive a car you are relying on multitudes of rubber products every day. Rubber parts found in cars include tires, hoses, gaskets, covers, and bumpers. When you go to an airport, you will […]
Benefits of Sourcing Offshore Manufacturing Cheap labor is virtually synonymous to offshore manufacturing. To be competitive on the global stage, corporations need globally competitive prices. For some, saving costs on their supply chain might be the saving grace of their business. There are risks to sourcing from offshore manufacturers, but if you educate yourself and […]
NVH Rubber Solution: Rubber Bumper Case Study A while back one of our customers was designing a rubber part for an automotive OEM and was looking for solutions to the rubber part’s squeaking problem. This part was meant to be a shock absorber on a vehicle bodyside, but previous iterations of the rubber bumper made […]
Why Is Rubber Used As Vibration Absorbers? Rubber is used as vibration absorbers, because rubber has a relatively high shear modulus compared to other materials. That means when a rubber material is shear stressed, i.e. stressed parallel to its cross-section, rubber can be stressed more before it becomes permanently deformed. In other words, when stress […]
What Are the Fire Resistant Rubber? Neoprene, Viton, and silicone are all fire resistant rubber. Neoprene’s Fire Resistance Although Neoprene was designed for its various oil and chemical resistant properties, Neoprene can also withstand burning and high temperatures. Neoprene is rated for operating temperatures up to 200°F. When heated past 200°F, Neoprene may stiffen. Neoprene […]
Classification Systems are important for making good quality rubber products. ASTM – Rubber Guidelines are necessary in ensuring that proper values are not only repeatable but accurate in an lab environment. Coi Rubber also recommends other testings just as JIS, MILSPEC, and many other OEM guideline, however, a proper ASTM – Rubber Guildline must be […]
This standard is issued under the fixed designation D 471; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision […]
What is ASTM – Rubber Guidelines? The ASTM rubber guidelines has over 12,000 standards. Within those standards, we’ll focus mostly on the D-2000. What else does ASTM cover? Many times, customers will ask engineers which specification should be used for a specific rubber compound. SAE titles ASTM D2000 as the “Standard Classification System for Rubber Products […]
In the rubber business, one of the most common terms you will encounter is rubber durometer. Durometer is both a measure of hardness of the material and the instrument used to measure it. A rubber durometer can be used to measure the hardness of not only solid rubber but also cellular rubber (e.g. foams, sponges), plastics, […]
