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PPE密封G75B214產品介紹

描述

Perlast G75B提供了優(yōu)異的化學耐受性、機械性能和高溫穩(wěn)定性的獨特結合，同時在這三個方面擴展了操作極限。

Perlast? G75B特別配制用于通過消除易受酸攻擊的填料和優(yōu)化聚合物結構來提高耐酸性。此外，這種全氟彈性體具有低滲透性，因此不易膨脹，例如在閥門、泵和機械密封件中延長了在用性能。

高模量使Perlast G75B具有抗擠壓性，理想用于中高壓應用。此外，低累計壓縮永久變形在高溫化學侵蝕環(huán)境中提供了較長的維護周期間隔。

Perlast? G75B適用于動態(tài)和靜態(tài)應用，可以完全模制成O形圈（直徑任何尺寸可達2米/6.5英尺）和定制形狀。

關鍵屬性  

對多種化學品具有優(yōu)異的耐受性

杰出的耐酸性和胺耐受性

出色的機械性能

在高溫下提供長期密封效率

極低的放氣特性

良好的蒸汽耐受性（符合ASME BPE 2000）

在MIL-L-23699C噴氣燃油中于200°C下336小時后膨脹率低于2%

Description

Perlast G75B offers a unique blend of excellent chemical resistance, mechanical properties and high temperature stability, simultaneously extending the operating limits in all three aspects.

Perlast? G75B has been specially formulated to provide increased Acid resistance by eliminating fillers that are prone to acid attack and optimising the polymer structure. In addition, this perfluoroelastomer has low permeability and as a result, it is less prone to swelling, leading to extended in-service performance in, for example, valves, pumps and mechanical seals.

A high modulus makes Perlast G75B resistant to extrusion and ideal for use in medium-high pressure applications. In addition, the low cumulative compression set provides a high mean-time between maintenance cycles in hot chemically aggressive environments.

Perlast? G75B is suitable for both dynamic and static applications and can be fully moulded into O-rings (any size up to 2m/6.5ft internal diameter) and custom shapes.

Key Attributes

Excellent chemical resistance to a wide range of chemicals

Exceptional acid and amine resistance

Superior mechanical properties

Long-term sealing efficiency at high temperature

Extremely low out-gassing properties

Good steam resistance (ASME BPE 2000)

Less than 2% swell in MIL-L-23699C jet oil after 336 hours at 200°C