This website uses cookies to ensure users have the best online experience. By continuing to browse this website, you are giving your consent to the use of cookies. To learn more, read our privacy policy. X
< Back to Packing


Abrasive Service Polyimide Packings

John Crane styles 1345, 1349 and 1349HC are constructed of high-tensile strength abrasion-resistant fibers. These packings service a wide range of abrasive and slurry services, temperatures, pressures and shaft speeds with excellent chemical-resistant characteristics. These styles are colorfast and offer the strength and chemical-resistance of aramid fibers without subjecting the shaft or sleeve to excessive damage. They feature dimensional stability, resilience, conformability and extrusion resistance. John Crane recommends that a flush be used with these products.

View complete list of product documents in all languages >
1345 1349 lg


  • 1345 — Polyimide (blue) & PTFE (white) filament fibers combined with PTFE dispersion and a high-temperature lubricant for enhanced performance and maintenance of a pH rating.
  • 1349 — Polyimide (blue) filament fibers coated with PTFE dispersion and a high-temperature break in lubricant.
  • Applications — Dynamic/abrasive, water, acids and caustics, gases, oils, steam, solvents, waster water, slurries, paper stock, liquors, asphalt, fly ash, condensate.
  • Standard sizes — Style 1345 is available in standard cross-section sizes from 3/16" to 1" in 1/16" increments.
  • Style 1349 is available in standard cross-section sizes from 1/8" to 1" in 1/16" increments.
  • As John Crane spools, these standard sizes are available for immediate shipment.
  • Metric and larger sizes are available upon request. Packing can be die-formed to exact dimensions for ease of installation and enhanced performance.


Temperature Limits

-170°F to 550°F/-110°C to 288°C

Pressure Limits

1345/1349 pump: 500 psi(g)/34 bar(g)

1345/1349 valve: 4,000 psi(g)/275 bar(g)

Speed Limits


pH Range

0 to 12

Recommended Applications

  • Process Pumps
  • Mixer and Agitators
  • Other Rotating Equipment
  • Valves

I have a question about the [Product Name]:

{0} must be filled in.
{0} must be filled in.
{0} must be filled in.
{0} must be filled in.
{0} must be filled in.