Valve-Stem Packings

Also known as stem packing or bonnet packing, this material is made of a string impregnated with PTFE or graphite to make it more pliable, self-lubricating and durable. Designed to conform to any surface it is an essential component for watertight mechanical seal. Affordable, dependable and easy to install this material is versatile and can be loaded with other materials such as glass fiber, silica or carbon to fit specific applications. Valve stem packings can withstand a maximum temperature of 1000°F.



  • Prevents liquid leaks
  • Safe and reliable
  • Consistent service temperature of -150 to 450°F



  • Watertight mechanical systems
  • Plumbing
  • Boat motor systems
  • Water and chemical systems

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