Gasket Material > Carbon Graphite > 2550/2551
Crinkled Flexible Graphite Tape
Construction
Styles 2550 and 2551 crinkled flexible graphite tape are made from high purity graphite with no fibers,
binders or other additives. Style 2550 crinkled tape is typically used as a stuffing box packing for pumps
and valves. Style 2551 is the same as 2550 except that it is furnished with a self-adhesive backing strip
to facilitate installation as a form-in-place gasket, thread sealant, or for facing jacketed and other
difficult-to-seal gaskets.
Application / Service
Styles 2550 and 2551 Flexible graphite covers a broad range of sealing applications. It handles most
chemicals in the 0 - 14 pH range at cryogenic and elevated temperatures, and from vacuum to extreme
pressures. It is used extensively in the chemical, automotive and pump and valve industries.
Service Limits
Type Description Value Temperature Limits Minimum -320°F (-200°C) Maximum
- In air
840°F (450°C)
- In steam
1200°F (650°C)
- In reducing or inert media
5400°F (3000°C) Pressure Static 2000 psi (137 bar) pH 0-14
Typical Properties Carbon Content 98% minimum Leachable Chlorides 50 ppm maximum Total Sulfur 100 ppm maximum
Standard Packaging*
Tape Thickness Tape Width Spool Length .015 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/8", 1-3/4", 2" 1/4" thru 1-18"... 50' 1/4" thru 1-18"... 100' *other thicknesses, widths, and spool lengths are available on special order.
Properties and application parameters shown throughout this datasheet are typical. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations consult Hanna. Failure to select proper sealing products could result in property damage and/or serious personal injury. Specifications are subject to change without notice. This edition supersedes all previous issues.