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Braided from low-sulphur expanded graphite yarns, which are reinforced by cotton or glass fiber. It has a very low friction, does not damage shafts or stems. It shows good thermal and chemical resistance and high elasticity.CONSTRUCTION:
Other reinforcement materials are also available:
Glass fiber--------High strength, lower cost
Carbon fiber------Less weight loss
UP202/203--Flexible Packing with Corrosion Inhibitor
Corrosion inhibitor acts as a sacrificial anode to protect the valve stem and the stuffing box.
