Spring Energized Seals

Energized Piston Seals

Spring Energized Seals,custom and standard dimensions available. Jacket in PTFE compound, PEEK, UHMW-PE, PU. 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, Hastelloy, NACE approved Inconel X750 and Elgiloy for cryogenics.
For the "V" shaped cross sections an optional EU-FDA approved Silicone Filling is available.

OVERVIEW

Spring Energized Seals for on piston housing

Enerseal 022 piston - 22 icon
022
Enerseal 29P  piston - 29P icon
29P
Enerseal Omega34 piston - 34 icon
034
Enerseal 65P piston - 65P icon
65P
Energized Piston Seals image

housig class

A
dimensional range
F
groove diameter
L
standard
L*
heavy
L**
BK
R S G
max. diametral gap
  H8 h9 H12     Bar/20 100 200 400
GP 6 - 20 A - 2.9 2.4 3.8 5.3 0.3 2.5 0,20 0,10 0,08 0,05
LP 10 - 240 A - 4.5 3.6 4.65 6.2 0.4 2.5 0,25 0,15 0,10 0,07
HP 16 - 400 A - 6.2 4.8 5.7 7.7 0.6 3 0,35 0,20 0,15 0,08
NP 28 - 650 A - 9.4 7.1 8.5 10.8 0.8 5.5 0,50 0,25 0,20 0,10
MP 45 - 1100 A - 12.2 9.5 11.2 14.7 0.8 8.5 0,60 0,30 0,25 0,10
RP 150 - 1200 A - 18.75 13.4 15.8 20.5 0.8 8.5 0,80 0,30 0,25 0,10

*Always choose heavy (reinforced) heel when pressure exceeds 200 bar
** Backup version for higer pressure and/or temperature

 

Coding example
housing class NP
profile code 022
bore 100
materials: jacket Neuflon 020 spring Aisi 314
Enerseal NP - 022 - 100 - N-020 - 314
assembly

Spring energized seals are suitable for assembling in closed groove starting from a minimum rod diameter
according with dimensional class and spring's shape.
Assembling requires skill and can be more or less difficult according with the position of the groove.

FOR THESE REASONS THE OPEN GROOVE ASSEMBLING IS ALWAYS STRONGLY RECOMMENDED

 

Enerseal V

 

dimensional class

 

Minimum bore diameter

 

 

GP

LP

HP

NP

MP

RP

35

50

70

105

140

200

     

Enerseal Omega

 

dimensional class

 

Minimum bore diameter

 

GP

LP

HP

NP

MP

RP

20

35

50

75

95

120

 
Spring Energized Seals can also be installed in SEMI-OPEN GROOVE
spring energized seals

 

The assembling cone can be manufactured out of PA6 or POM. If needed pre.heat the seal in water or oil (max 100°C). Snap the seal in to the groove as quick as possible, then resize.

 

Housing
class
A
dimensional range
F
groove diameter
L
standard
L *
reinforced heel
E
step diameter
R S G
max clearence
  H8 h9 H12 h12     Bar/20 100 200 400
GP 6 - 20 A - 2,9 2.4 3.8 F + 0.8 0.3 2.5 0,20 0,10 0,08 0,05
LP 15 - 240 A - 4.5 3.6 4.65 F + 1.2 0.4 2.5 0,25 0,15 0,10 0,07
HP 25 - 400 A - 6.2 4.8 5.7 F + 1.4 0.6 3 0,35 0,20 0,15 0,08
NP 45 - 650 A - 9.4 7.1 8.5 F + 1.6 0.8 5.5 0,50 0,25 0,20 0,10
MP 80 - 1100 A - 12.2 9.5 11.2 F + 1.8 0.8 8.5 0,60 0,30 0,25 0,10
RP 150 - 1200 A - 18,75 13,4 15,8 F + 2,5 0,8 10 0,80 0,30 0,25 0,10
*Always choose reinforced heel when pressure exceeds 200 bar
finishes
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
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.
materials

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

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

-268 +260

Fit for soft surfaces
N-074 PEHMW white FDA -140 +80 High wear and extrusion resistance
N-155 PVDF white FDA -30 +140 High modulus
P95-A252 Polyurethane blue FDA -50 +105 Extrusion and wear withstanding, low friction coefficient
P95-VI251 Polyurethane violet  FDA  -30 +115 CIP (clean in place) fluids compatible
P95-R198 Polyurethane red   -30 +125 Extrusion and wear withstanding, low friction coefficient, high temperatures
P95-AR255 Polyurethane orange   -30 +135 Extrusion and wear withstanding, low friction coefficient, higher temperatures
P95-G253 Polyurethane MoS gray   -30 +105 Extrusion and wear 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
availability
  • 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.

Availability