Spring Energized Seals | Face seals inner pressure

 
Face seals inner pressure

Spring Energized Seals, custom and standard dimensions available. Jacket in PTFE compound, PEEK, UHMW-PE, PU 54Sh.D. Jackets and electro-welded springs are designed and realized within the company, so that HD has the complete control of the production process. Spring are available in Aisi302, Elgiloy, Hastelloy and NACE approved Inconel X750.
For the "V" shaped cross sections up a max. D diameter  of 250,  an optional EU-FDA approved silicone filling is available.

housing class D
dimensional range
I
inner diameter
H
groove depth
L
standard
L*
reinforced heel
R
max.
internal pressure H8   H8 H12  
GI 20 - 50 D - 2L 1,45 2,4 3,8 0,4
LI 20 - 240 2,25 3,6 4,65 0,4
HI 25 - 400 3,1 4,8 5,7 0,6
NI 45 - 650 4,7 7,1 8,5 0,8
MI 80 - 1200 6,1 9,5 11,2 0,8
RI 150 - 1200 9,5 13,4 15,8 0,8
*Always choose reinforced heel when pressure exceeds 200 bar
SURFACE FINISH ACCORDING WITH FLUID
application max Ra µm
dynamic surface
max Ra µm
static surface
CRYOGENICS 0,1 0,2
FREON
HELIUM
HYDROGEN
0,2 0,3
AIR
NITROGEN
ARGON
METHANE
FUELS
0.2 0.4
WATER
OIL
0.3 - 04 0.6
ROTOLIP ROTARY SEALS
 Shaft surface

Ra 0.2 - 0.3 micron max.
Rz 1.0 - 2.5 micron max.
R max. < 4 micron
Shaft hardness

55 HRC min. for pressure up to 5 bar
60 HRC min. for pressure > di 5 bar
60 HRC for speed > 4m/sec
Surface treating deep

0.3 mm min.
  • To check the availability:
    -choose profile and compound from the drop-down menu
    -input the desired housing class
    -input the desired diameter
  • Once obtained the availability, a request for quotation can be sent.

Click compound's code to download the .PDF data sheet (login requested)

HD Slippers
code
Composition Approvals ΔT °C Description
N-009 Ptfe-oxides   -268 +260 All pourpose on soft surfaces
N-095 Tfm FDA -268 +260 Low creep, better strength.
N-031 Ptfe-bronze   -268 +260 High wear resistance, hidraulic seals
N-032 Ptfe-carbon   -268 +260 High wear resistance, pneumatic and hydraulic seals
N-197 Ptfe-carbographite NORSOK -268 +260 High wear resistance, hydraulic and pneumatic seals
N-043 Ptfe-graphite FDA -268 +260 High wear resistance, low friction coefficient.
N-060 Ptfe-glass fibre FDA -268 +260 All pourpose on hard surfaces
N-067 Ptfe-glass fibre FDA
NORSOK
-268 +260 High wear and creep resistance
N-033 Ptfe-glass fibre MoS2 FDA -268 +260 Fit for hard surfaces
N-103 Ptfe-Carbon fibre   -268 +260 Fit for hard surfaces
N-102 Ptfe-Liquid crystal polymer FDA - EU
-268 +260 Food & Pharma, fit for soft surfaces
N-088 Ptfe-polyimide  

-268 +260

Fit for soft surfaces
N-074 PEHMW FDA -140 +80 High wear and extrusion resistance
N-155 PVDF FDA -30 +140 High modulus
P95-A112 Polyurethane     -30 +105 Extrusion withstanding, low friction coefficient

P95-G114

Polyurethane FDA -30 +105 Extrusion withstanding, lower friction coefficient

 

CHOOSING Neuflon-ptfe compound ACCORDING WITH FLUID AND SURFACE
  SURFACES
  Steel HEC>=30-45
Temp. Mart. Inox Steel
Cast Iron HRB<=200
Steel HRC>=45
Cast Iron HRB>200
Galvanic or chemical surfacing HV>=700
Chromium Bronze
Bronze
Brass
Treated Aluminium Aust. Inox Steel
Glass
FLUIDS NEUFLON-ptfe compounds (standard in bold)
Hydraulic oil
Transmission oil
Fire resistant syntetic hydraulic oil
N-031
N-032 N-060 P95-A112
N-031
N-032 N-060 P95-A112
N-009
N-043 N-032 P95-A112
N-032 N-074 P95-A112 N-009
N-032 N-074 P95-A112
Water and oil/water emulsions N-032
N-060 N-074
N-032
N-060 N-074
N-009
N-043 N-074
N-032
N-074
N-009
N-032 N-074
Drugs and food N-074
N-102 N-043 N-060 N-095 P95-B113
N-009
N-074 P95-B113
N-102
N-009 P95-B113
N-009
N-074 P95-B113
N-009
N-074 P95-B113
Air N-032
N-031 N-043 N-074 P95-A112
N-032
N-043 P95-A112
N-032
N-009 N-043 N-074 P95-A112
N-032
N-074 P95-A112
N-032
N-009 N-043 N-074 P95-A112
Steam N-032
N-043
N-032 N-009
N-032 N-043
  N-032
N-009 N-043
Acids and Bases N-032
N-074
N-032
N-043 N-074
    N-009
N-032 N-043 N-074