Our 25 Materials of Christmas continues with materials #16-19! Take a look at these compounds here, and learn about them in more detail on our Material Selection Guide at applerubber.com.
Polyacrylate features excellent resistance to hot oil, automatic transmission, and Type A power steering fluids, making it great for use in automobile manufacturing, especially within sealing components of automatic transmission and power steering systems. This material is also highly resistant to sunlight and ozone degradation, featuring an enhanced ability to resist flex cracking.
The temperature range for the standard compound of Polyacrylate is -25° to +300°F, and for the special compound is -40° to +347°F, with a Hardness (Shore A) of 40 to 90.
Cast Polyurethane is mainly used in seals for high hydraulic pressures and situations where highly stressed parts are subject to wear such as in wheels, rolls, bumpers, couplers, and shock absorbers.
Cast Polyurethane compounds feature excellent resistance to mineral-based oils and petroleum products, aliphatic solvents, alcohols and ether. They are also compatible with hydraulic fluids, weak acids and bases, and mixtures containing less than 80% aromatic constituents.
The temperature range of this material is -30° to +175°F, with a Hardness (Shore A) of 70 to 90.
Millable Polyurethane is outstanding over most other O-ring elastomers in abrasion resistance and tensile strength. The key uses of Millable Polyurethane are in situations where highly stressed parts are subject to wear, as well as in seals for high hydraulic pressures.
The temperature range of Millable Polyurethane is -30° to +175°F, with a Hardness (Shore A) of 40 to 90.
Silicone is mainly used in static seals for extreme temperature situations, as well as seals for medical devices. Silicones are renowned for their retention of flexibility and low compression set characteristics, within one of the widest working temperature ranges for elastomers.
The temperature range for the standard compound of Silicone is -85° to +400°F, and for the special compound is -148° to +400°F, with a Hardness (Shore A) of 20 to 80.
Stay tuned next week for the last installment of materials from Apple Rubber!