... : resistant to strong acid,alkali,salt and gas of deleterious, PFA/PEEK has long life,resistant to wear.high toughness,high ... -limitedMax working tempLoad capacityRingBallsCage typesSi3N4Si3N4PEEK/ PTFE/ PFA/ GRAPHITE REINFORCING PTFEUC 200.........260°C....ZrO2Si3N4PEEK/ PTFE/ PFA/ GRAPHITE REINFORCING PTFEUC 200........260°C ...