Graphite seal for valves

Valvograph Rings

Features

Pure Flexible Graphite

Composition

The Valvograph department is able to produce tailor made die-formed graphite rings from 5.0 to 2,000.0 mm for different applications.
The gaskets are codified V48, V48R if energised and V48 OXY if for oxygen service.

Applications

Graphite die-formed rings for industrial Valves

Download DS

Flexible Graphite Foil  
Sigraflex Styles C, E, APX, Z and ZX 
Dimensions
from 10 to 2300 mm
Bulk densityfrom 1,35 to 1,85 gr/cm3 

Dimensions and Tollerances (mm)                                    Out. D. Inn. D.Th.WallBulk Density
up to 250 mm[-0,10 ÷ 0,00] [-0,00 ÷ 0,20] 
+/- 0,20 [-0,15 ÷ 0,00] 
+/- 5,00% 
from 251 to 500 mm[-0,25 ÷ 0,00] [-0,00 ÷ 0,25]  +/- 0,20[-0,25 ÷ 0,00]  +/- 5,00%
from 501 to 750 mm
[-0,50 ÷ 0,00]
[-0,00 ÷ 0,50]
+/- 0,20
[-0,30 ÷ 0,00]
+/- 5,00% 
from 751 to 1000 mm [-0,60 ÷ 0,00]
[-0,00 ÷ 0,60]
+/- 0,20
[-0,40 ÷ 0,00]
+/- 5,00%
from 1001 to 1250 mm [-0,80 ÷ 0,00]
[-0,00 ÷ 0,80]
+/- 0,20
[-0,45 ÷ 0,00]
+/- 7,00%
from 1251 to 2300 mm [-0,90 ÷ 0,00]
[-0,00 ÷ 0,90]
+/- 0,20 [-0,50 ÷ 0,00]
+/- 7,00%


Carrara S.p.a. can produce the gaskets with customized tolerances. Call Carrara's Technical Office and all your requirement will be evaluated. The molding's tools is available on-line at the window Download

About the formed Graphite Rings
(1) The temperature has to be lower than 450°C with mild oxidizers, hot combustion gases and hot air
(3) Avoid the strong oxidizers
(4) Be care about the gap within the assembled parts: the graphite rings can extrude