说明与应用

TEADIT 25 BI 是一种由 e-PTFE膨胀聚四氟乙烯制成的多向密封胶带。TEADIT拥有DIN EN ISO 9001质量管理体系认证和DIN EN ISO 14001环境管理体系认证。

应用领域：

TEADIT 25 BI由于其出色的延展性特别适合补偿不规则密封区域或者损坏密封区域，同样适合压力敏感密封处。特殊的制造工艺使其纵向和横向的抗拉强度几乎相同。因此，材料在压缩下不会改变其宽度。这与普通膨体聚四氟乙烯胶带形成鲜明对比。

由于此特性，TEADIT 25 BI 非常适合用于狭窄密封区域，以及需要规定垫圈宽度（低负荷）的所有应用。典型应用是搪瓷和玻璃法兰、热交换器、大型法兰和容器、压力容器、吸滤器和过滤器等。

Technical data:
• PTFE Temperature range: -268 °C to +260 °C
(short time +315 °C)
• Chemical resistance: chemically inert against most substances
(pH 0 – 14), including the most aggressive acids and lyes. The
only exceptions are molten alkali metals and elemental fluorine
at high temperatures and high pressure
• Ageing: TEADIT 25 BI does not age and can be stored
indefinitely. (Please note: the adhesive tape has limited shelf life)
• Minimum stress to seal Qmin/L (EN 13555 HE, 40 bar)*
L[mg/s*m] 10ˉ² Qmin/L [MPa] = 23
L[mg/s*m] 10ˉ³ Qmin/L [MPa] = 31
* tested with 2.0mm thickness
• Recovery (ASTM F36): 10 %
• Compressibility (ASTM F36): 70 %
Typical application range:
• Temperature range: -60 °C up to +230 °C
• Operating pressure: from vacuum to 40 bar