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Rubber, Fluorocarbon Elastomer (FKM) 70 to 80 Hardness, Low Temperature Sealing Tg -22 °F (-30 °C) For Elastomeric Shapes or Parts in Gas Turbine Engine Oil, Fuel and Hydraulic Systems
AMS3384
Rubber: Fluorocarbon Elastomer (FKM) Low Temperature Sealing Tg -40 °F (-40 °C) 70 to 80 Type ‘A’ Hardness For Elastomeric Seals in Aircraft Engine Oil, Fuel and Hydraulics Systems
AMS7379A
Rubber: Butadiene-Acrylonitrile (NBR) Synthetic Lubricant Resistant 65 – 75 Hardness For Seals in Synthetic Lubricant Systems
AMS7272G
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