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Avalon 56
聚四氟乙烯
Greene, Tweed & Co.

产品说明

PTFE is preferred for use in many pharmaceutical-sealing applications. Its chemical inertness and ultra-low level extractables provide pharmaceutical process and validation engineers with a safe material to use in almost any application. PTFE is visco-elastic, providing a functional seal when other fluorinated plastics such as PFA or FEP cannot. However, because virgin PTFE will creep under load its ability to provide a reliable seal during temperature cycling is limited.

Ferrule gaskets made from Avalon® 56 provide a level of performance superior to other PTFE materials used in the pharmaceutical and hygienic fluid handling industries. Greene, Tweed's Avalon 56 uses the latest generation modified PTFE. Modified PTFE contains a small amount of a perfluoroether to improve creep resistance, compressive strength and permeation resistance. Modified PTFE is not only the material of choice for PTFE-faced diaphragm materials, but it is also FDA compliant.

While other gasket manufacturers fabricate gaskets by directly molding the finished part, Greene Tweed machines Avalon 56 sanitary gaskets and custom shapes from isostatic-molded billets to provide optimal physical properties and tighter tolerances, easing the installation process.

Avalon 56 virgin PTFE seals deliver improved sealing performance over standard PTFE. Avalon 56 is available in all sanitary gasket sizes, as well as custom shapes.

总体    
材料状态 • 已商用：当前有效   
供货地区 • 北美洲   
性能特点 • 低萃取物 • 良好的抗蠕变性 • 耐化学性良好 
 • 高弹性 • 良好的抗压强度  
    
用途 • 垫圈 • 密封 • 药物 
机构评级 • FDA 未评级 • USP 第VI类  
外观 • 白色   
形式 • 颗粒料   
    
物理性能  额定值单位制 测试方法 
比重  2.17g/cm³ ASTM D1457 
机械性能  额定值单位制 测试方法 
抗张强度 (屈服)  34.5MPa ASTM D638 
伸长率 (屈服)  450% ASTM D1457 
剪切强度   ASTM D732 
27°C  16.5MPa  
38°C  15.2MPa  
66°C  12.8MPa  
93°C  11.7MPa  
149°C  10.3MPa  
204°C  9.31MPa  
摩擦系数 2    
与自身 - 动态  0.080  
与自身 - 静态  0.050  
负载变形 (22°C, 14 MPa)  3.20% ASTM D621 
Wear Factor  500010^-8 mm³/N•m   ASTM G77 

备注
1 一般属性：这些不能被视为规格。

2 33.3 psi