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Avalon 56
聚四氟乙烯
Greene, Tweed & Co.

產(chǎn)品說明

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.

總體    
材料狀態(tài) • 已商用：當(dāng)前有效   
供貨地區(qū) • 北美洲   
性能特點(diǎn) • 低萃取物 • 良好的抗蠕變性 • 耐化學(xué)性良好 
 • 高彈性 • 良好的抗壓強(qiáng)度  
    
用途 • 墊圈 • 密封 • 藥物 
機(jī)構(gòu)評(píng)級(jí) • FDA 未評(píng)級(jí) • USP 第VI類  
外觀 • 白色   
形式 • 顆粒料   
    
物理性能  額定值單位制 測(cè)試方法 
比重  2.17g/cm³ ASTM D1457 
機(jī)械性能  額定值單位制 測(cè)試方法 
抗張強(qiáng)度 (屈服)  34.5MPa ASTM D638 
伸長率 (屈服)  450% ASTM D1457 
剪切強(qiáng)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  
摩擦系數(shù) 2    
與自身 - 動(dòng)態(tài)  0.080  
與自身 - 靜態(tài)  0.050  
負(fù)載變形 (22°C, 14 MPa)  3.20% ASTM D621 
Wear Factor  500010^-8 mm³/N•m   ASTM G77 

備注
1 一般屬性：這些不能被視為規(guī)格。

2 33.3 psi