新源光學實業有限公司

Protect stethoscope with this study and and refined sapphire glass cover. With a high corrosion resistance along with anti-impact and anti-scratch properties, this durable and sturdy glass cover promises to protect stethoscope. A sapphire cover is highly transparent that could clearly see through it. 

• An anti-impact and anti-scratch design.
• With high electrical resistance.
• Excellent thermal stability.
• With high optical production rate.
• Features a high melting temperature of 2030 °C.
• With a high hardness of 9 Mohs, which is second to diamond.
• Purity: 99.99%.
• Density: 3.98-4.1g/cm2.
• Compressive strength: 21000kg/cm2.
• Flexural strength: 4000kg/cm2.
• Infrared transmittance: 85%.
• Dielectric constant: 7.5 - 10.5.
• Place of origin: China.
• Color: transparent or custom-made.
• Size: custom-made.