What durometer are Viton O rings?
75A
Viton is vulnerable to low molecular organic acids, ammonia gas, alkalis, amines, glycol-based brake fluids, and super-heated steam. The durometer hardness of this Viton O-ring is 75A.
Is Viton better than silicone?
Both materials are well suited for use in the -30 to 205°C range. Silicone has an advantage in lower temperatures and Silicone has an advantage in higher temperatures. Marco offers specific compound formulations extending these ranges even futher as can be seen in the following compound comparison chart.
What durometer are O rings?
O-Rings are available in almost all durometers, with 70 or 90 durometer, the most common in most compounds. Harder materials, like 70, 75 or 90 durometer compounds, offer greater resistance to extrusion.
What is the durometer of silicone rubber?
Silicone rubber keypads can be made with different hardness (also known as durometer) ranging from 30 shore A to 80 shore A durometer. Rubber bands, for instance, have a durometer of 20 shore A, plastic is about 95 Shore A or higher. Raw silicone comes in base hardness of 30, 50, 70 and 80 Shore A.
How hard is 70A durometer?
A 70A durometer rubber is as hard as a car tire and doesn’t offer the flexibility necessary to extract such a delicate part without breaking it. An elastomer with a 30A shore durometer or lower would likely be flexible enough for this application.
What is a Viton o-ring?
Viton® O-Rings Viton is a brand of synthetic rubber and fluoropolymer elastomer commonly used in O-rings and other molded extruded goods. Viton is a registered trademark of DuPont and is sometimes generically referred to as FKM.
What is Viton rubber used for?
Viton® is a brand name of DuPont for its synthetic rubber and fluoropolymer elastomer, commonly used in O-rings and other moulded or extruded products.
Which is better nitrile or Viton?
Environmental Properties: Viton® O-rings and seals have a wide range of chemical resistance (involving mineral acids, fuels, and oils) and this material is also highly resistant to oxidation, UV exposure, fungus, weather, ozone, and mould. This makes Viton® far superior to Nitrile in these regards.
How hard is Shore A 50?
For example: 30 Shore A is much softer than 80 Shore A. Once a material reaches Shore 95 A, it will resemble a plastic over a flexible material regarding how it feels….Rubber hardness examples and applications – A rated.
| 25 – 35 Shore A | Rubber bands |
| 50 Shore A | Rubber stamps |
| 55 Shore A | Door seals and Pencil erasers |
How hard is 70 durometer?
For example, you would not choose a rubber with a durometer of 70A to make a mold of a plaster standing ballerina with thin, protruding arms bent at opposing angles. A 70A rubber (as hard as a car tire) is stiff and would not offer enough flexibility to extract this model without breaking it.
What is 60A durometer?
Car Tire Tread
c. Shore 60A = Car Tire Tread. d. Shore 70A* = Running Shoe Sole.
What is the hardest rubber?
Nitrile. Nitrile (also known as Buna-N) is a copolymer of butadiene and acrylonitrile and one of the strongest rubber materials in applications involving oil and fuel.
Is Viton harder than Nitrile?
This makes Viton® far superior to Nitrile in these regards. They are also designed to resist most oils and lubricants, more importantly petroleum-based lubricants. Applications: Viton® functions well in different automotive, chemical and appliance-processing industries.
How strong is Viton?
High temperatures: A Viton™ o ring will withstand temperatures from -20°C up to 210°C. Chemicals: Viton™ can withstand a range of chemicals, including oils, acids, silicone fluids and gasses as well as halogenated and aromatic hydrocarbons.
Is Viton better than nitrile?
Is Viton harder than nitrile?
What is 70A durometer?
A rubber durometer of Shore 70A is the most commonly chosen material hardness for all applications.
Which is harder 70 or 90 durometer?
The hardness of rubber compounds is measured by the Shore A durometer; the higher the durometer, the harder the compound. 70-durometer hardness should be used whenever possible as it offers the best combination of properties for most O-Rings applications.
What is the hardest durometer?
Here are some common products used to pinpoint certain levels of hardness on the Shore durometer scale. Presented here in order from softest to hardest. Remember, 100 is the “hardest” measurement on the Shore A scale. Rubbers harder than a shopping cart wheel should be measured using the Shore D durometer scale.
Where is Viton rubber used?
Well, Viton™ is frequently used in appliance processing, automotive and chemical industries. We also supply Viton™ products to aerospace companies, oil and gas exploration industries and petroleum refining and transportation businesses.
What is a durometer scale?
A durometer scale is a type of measurement for rubber material hardness. The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application.
What is the rubber durometer chart for?
The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application. Generally, most rubber materials fall under the rubber durometer scale of Shore A.
Which durometer should I choose for my running shoes?
Thus, if you need a rubber or O-ring durometer that feels like a running shoe sole, review our rubber hardness chart below, then pick Shore 70A. A rubber durometer of Shore 70A is the most commonly chosen material hardness for all applications.
What are the benefits of Viton® rubber?
It also offers superior resistance to aging, oxidizers, ozone, oils and various chemicals. However, Viton® has limited use in low temperature environments. There are also multiple grades available for Viton® rubber, including copolymers and terpolymers.