Enerseal® Spring Energized Seals

Energized Piston Seals

Spring Energized Seals Enerseal®,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 Aisi 301 302, 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

Enerseal® Spring Energized Seals for on piston housing

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022

29P

034

65P

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

105

140

200

Enerseal Omega

dimensional class

Minimum bore diameter

120

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

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