LOT OF SIX (6) HIGH PURITY ALUMINA LARGE RING WASHER SPACER SLEEVE BUSHING
No.: 114B
You are buying a Lot of Six (6) High Purity Large Alumina Ceramic Spacer Ring Washer Spacer Sleeve Bushing. They are in excellent being NOS (New Old Stock). They are made from 99.8% purity Aluminum Oxide (Al2O3) which of course is Alumina. Generally the balance of composition for this purity Alumina material is of Silicon Dioxide (SiO2) which is Silica. This material has very high hardness, very high stiffness, very good corrosion resistance to chemicals at high temperature, and very high refractory ness or use temperature. They may be used for a variety of electrical, mechanical, and thermal applications. They are great for firing sample in a high temperature kiln. The are great for both industrial or sculptural works of art. They may also be used for jewelry or for applications requiring high wear or abrasion resistance. Your imagination is the only limiting factor in the spectrum of possible applications for this component. Be sure to view all photos as they are an integral component of the item description.
The specifications for these components are as follows:
Inside Diameter:
Approximately 0.615”+/- 0.005" (15.6 mm)
Wall Thickness:
Approximately 0.062” +/- 0.005"(1.58 mm)
Please Note:
There may be slight differences in any or all of the dimensions. There may be firing discolorations. Some may have minor edge chips. These are precision technical ceramic components. There is no warp or camber
Specification for this item. However they are relatively flat.
Specific Gravity or Density: 3.9 g/cm3
Water Absorption or Porosity: 0%
Fusion Temperature or Melting Temperature: 2000 °C or 3550 °F
Maximum Working Temperature: 1600 °C or 2900 °F
Thermal Conductivity:
25 W/m* K
Specific Heat: 0.9
J/g*K
Expansion Coefficient or CTE: 7.5 x 10 E-6 inches/°C
Electrical Resistivity at 20 C: 10 E 14 Ohm*cm
Electrical resistance at 600 C: 10 E 8 Ohm*cm
Modulus of Elasticity:
44 x 10 E 6 p.s.i. or 350 GPa.
These components were not specifically manufactured for an individual application; therefore be sure to check the dimensional descriptions carefully for your application. Future returns or requests for refunds, because of some "fit" issue or the like will not be honored. Please check the other Alumina component variants that are available in my listings for the model or models that best fits your requirement. Your imagination is the only limiting factor in the spectrum of possible applications for these components and materials.
If you require additional technical information, design, or application engineering consultation, feel free to contact us. As a materials scientist with four decades experience in high temperature processing, ceramics, dentistry, and jewelry manufacture it will be possible to provide you with creative and imaginative approaches to your requirements.
Feel free to ask any questions you may have regarding this item early. Use PayPal only. Combined shipping discount is provided for multiple item purchases. For best results, please be sure to shop using cart, then complete the paying transaction when you are satisfied that all the items you need are in the cart. Items purchased separately will be shipped separately as a unique transaction. Please complete payment transactions within 3 days. Items are generally shipped via USPS first class mail with delivery confirmation. Ask about shipping costs to your country.
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No.: 114B