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401

Wire reinforced braided yarn

Chesterton 401 is constructed with wire-reinforced braided yarn which surrounds a flexible and resilient asbestos-free core. The non-asbestos jacketed yarn construction encapsulates the wire reinforcement in the yarn, preventing stem wear and scoring. This special construction makes 401 an economical, non-asbestos, general service valve stem packing for use in high-temperature and high-pressure applications.
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 Technical Data

Temperature Limit
650°C (1200°F)
Chemical ResistancepH 1-12
Pressure Limit105 bar g (1500 psig)

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