GRAPH-LOCK® Die-Formed Graphite Rings for High-Temperature and Chemical Sealing Applications

STYLE-GRAPH-LOCK Rings
GRAPH-LOCK® Die-Formed Graphite Rings for High-Temperature and Chemical Sealing Applications
  • Shipping Weight: 0 lbs
  • Style/Model: GRAPH-LOCK Rings

Garlock GRAPH-LOCK® Rings provide reliable sealing performance in the most demanding fluid services, including high-temperature, chemically aggressive, and toxic environments. Ideal for valve stem sealing and static gasket applications, these die-formed graphite rings are trusted by OEMs and MRO professionals across industries where emissions compliance, chemical resistance, and sealing integrity are critical. With nearly 50 years of experience manufacturing with graphite foil and an extensive tooling inventory, Garlock delivers custom-fit GRAPH-LOCK solutions without long lead times or added tooling costs.


GRAPH-LOCK Rings are available in a range of densities and configurations, including patented designs engineered to improve radial expansion and meet strict emissions control standards. Their exceptional thermal stability, purity, and chemical resistance make them well-suited for use in nuclear steam valves, high-purity chemical systems, and critical infrastructure. Whether used alone or as part of an engineered set with braided end rings, these rings offer consistent, long-term sealing performance across a wide range of pressure and temperature conditions.

  • Overview

Features and Benefits:

  • Performs across a broad temperature range from cryogenic to 850°F in air and up to 1200°F in steam or inert environments, making it suitable for both extreme cold and high-heat applications. 
  • Enables emissions compliance in valve stem sealing applications, helping customers meet environmental and regulatory standards. 
  • Delivers excellent chemical resistance across a wide range of fluid media, including aggressive and toxic substances, with the exception of strong oxidizers. 
  • Manufactured with high-purity graphite, making it ideal for nuclear steam valves and other applications requiring strict contamination control. 
  • Produced with a large inventory of in-house tooling to offer custom sizes without added lead time or tooling costs.
  • Produced with a large inventory of in-house tooling to offer custom sizes without added lead time or tooling costs.
  • Die-formed flexible graphite structure conforms to sealing surfaces and provides consistent sealing performance over time. 
  • Engineered by experienced technical teams with decades of application knowledge, enabling customized solutions for complex OEM designs.
  •  Performs reliably in both dynamic valve stem sealing and static gasket applications between flanged equipment. 
  • Compatible with braided end rings in engineered packing sets for added durability, abrasive protection, and emissions compliance.

Typical Applications:

  • Valves
  • Pumps
  • Turbines
  • Soot Blowers

Media Use:

  • Volatile Organic Compounds
  • Media Requiring Emissions Compliance
  • Hydrocarbon Gases and Liquids
  • High Temperature/Pressure Steam 
  • Cryogenic Liquefied Gases 
  • Acidic and Basic Solutions 

Interchange:

Chesterton 5300, Chesterton 5800, Chesterton 5800E, Sepco BWFP, James Walker Lionpak, John Crane EPS, John Crane VPS, Latty LATTYgraf EBST, Latty LATTYgraf EF NG, Latty Graphite Rings, Burgmann Stratotherm R

Industries Served:

  • Hydrogen
  • Chemical Processing
  • Marine
  • Nuclear
  • Oil and Gas
  • Power Generation
  • Pulp and Paper
  • Aerospace
  • OEM and Customized Solutions