Engineering Constructionhydraulic Cylinder Spgw Bronze PTFE NBR POM Piston Compact Combined Seal

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Guangzhou NextGen Technology CO.,LTD

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SPGW
NBR/FKM/PTFE/PU/POM\PA/Peek/Silicon/EPDM
Hydraulic Cylinder/Construction Machinery
Piston and Rod Seal
Water Resistant/Oil Resistant/Temperature Resistan
Spgw Seals
Standard
High Speed
Single Lip/ Double Lips
Black, Brown, or as Your Request
30-90 Shore According to Work Environment
Hydraulic Oil
NextGen Tech
Carton or as Your Required
All Standard, Customized
Guangzhou, China
4016931000
Product Description

Hydraulic seals and pneumatic seals are designed as per the cylinder working pressure, cylinder speed, operating temperature, working medium and application.
Hydraulic seals are generally relatively soft, non-metallic rings captured in groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion. Not only must the hydraulic seals prevent leakage of fluid from the Cylinder, but hydraulic seals must also withstand high pressures, extreme temperatures and transverse forces within the cylinder. In such applications, the function of Hydraulic Seals goes far beyond preventing fluid leakage.
Hydraulic seals can be made from a variety of materials such as polyurethane, rubber or PTFE. The type of material is determined by the specific operating conditions or limits due to fluid type, pressure, fluid chemical compatibility or temperature.
A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like gasket.
A type of dynamic hydraulic seal called a rod seal is exposed to movement on its inner diameter along the shaft or rod of a hydraulic cylinder.
A type of dynamic hydraulic seal called a piston seal is exposed to movement on its outer diameter along the tube or bore of a hydraulic cylinder
.

A hydraulic seal is used to contain fluids and maintain the hydraulic pressure (piston seal, rod seal, back-up ring), to stop the inlet of impurities and to preserve the lubricating film on the rod (wiper seal) and to resist any deformation under a radial load by guiding the piston and rod (wear ring and guide strip).
NextGen Tech has a complete range of hydraulic seals and we can also assist you in creating custom-made seals for linear and static hydraulic applications.

 

Seal Functions
Each dynamic seal in a hydraulic cylinder has a special function to contribute to the performance of the system.
Piston Seal Functions
Acts as a pressure barrier and prevents fluid passing the piston; important for controlling the cylinder motion or maintaining the position at rest
Rod Seal Functions
Act as a pressure barrier and keeps the operating fluid inside the cylinder
Regulates a film of fluid on the surface of the piston rod as it extends; important to inhibit rod corrosion and lubricate the wiper and rod seal itself
Accept the lubrication film back into the cylinder when the rod retracts
Buffer Seal Functions
Protect the rod seal from fluid pressure spikes in excess of system pressure
Attenuate the fluctuations in system pressure, thereby improving rod seal performance by allowing the rod seal to deal with more constant or gradually changing pressure
Act as an internal excluder to keep system contaminants, such as metal particles from damaging the rod seal
Wiper Seal Functions
Prevent external contaminants from entering the cylinder assembly and hydraulic system (pump, reservoir etc)
Accept the lubrication film back into the cylinder when the rod retracts
Guide Rings (rod and piston) Functions
Prevent metal to metal contact between components
React to radial loads caused by side loads on the cylinder assembly

Description Of SPGW
The SPGW Seal is a high-pressure heavy-duty piston seal with excellent leakage control and superior extrusion and wear resistance
The SPGW  seal is a combination of a PTFE based slipper seal energised by an elastomer profile ring and completed with two Back-up rings (POM). It is manufactured with a predefined interference fit, which together with the squeeze of the elastomer part ensures a good sealing effect even at low system pressure. At higher pressures the elastomer part is energised by the system pressure and consequently activates the slipper seal in the radial direction.
The Back-up rings prevent the slipper seal from extrusion and ensure a long service life even under harsh conditions.

 
Technical data
Temperature-40°C / +100°C
PressureUp to 45MPa
SpeedUp to 1.5m/s
MediasMineral oil based hydraulic fluids /water 
oil and glycol / oil emulsions
MaterialElastomer 
NBR
Friction ring
Bronze-filled PTFE
Back-up rings
Polyoxymethylene (POM)
AdvantagesLow friction coefficient; no stick-slip effect
Possible increase in extrusion gaps
Excellent extrusion resistance even during pressure peaks
Excellent abrasion resistance
Assembled by deformation 
ApplicationsThe SPGW seal is the recommended sealing element for double acting pistons of hydraulic cylinder working in very harsh conditions such as: Excavators, Mobile machinery, Heavy duty hydraulic cylinders
 
Part numberBore diameterGroove diameterSeal heightGroove width
ØD1 H9Ød1 h9H1L1 0/+0.20
SPGW40*30*940308.59
SPGW45*35*945358.59
SPGW50*36*950368.59
SPGW55*41*955418.59
SPGW60*46*960468.59
SPGW63*48*11634810.511
SPGW65*50*11655010.511
SPGW70*55*11705510.511
SPGW75*60*11756010.511
SPGW80*65*11806510.511
SPGW85*70*11857010.511
SPGW90*75*11907510.511
SPGW95*80*11958010.511
SPGW100*85*12.5100851212.5
SPGW105*90*12.5105901212.5
SPGW110*95*12.5110951212.5
SPGW115*100*12.51151001212.5
SPGW120*105*12.51201051212.5
SPGW125*102*1612510215.516
SPGW130*107*1613010715.516
SPGW130*116*17.51301161717.5
SPGW135*112*1613511215.516
SPGW140*115*1614011515.516
SPGW140*117*1614011715.516
SPGW150*127*1615012715.516
SPGW150*134*1615013415.516
SPGW160*137*1616013715.516
SPGW170*147*1617014715.516
SPGW180*157*1618015715.516
SPGW185*162*1618516215.516
SPGW190*167*1619016715.516
SPGW200*177*1620017715.516
SPGW210*187*1621018715.516
SPGW220*197*1622019715.516
SPGW225*202*1622520215.516
SPGW230*207*1623020715.516
SPGW240*217*1624021715.516
SPGW250*222*17.52502221717.5
SPGW260*232*17.52602321717.5
SPGW270*242*17.52702421717.5
SPGW280*252*17.52802521717.5
SPGW300*272*17.53002721717.5
SPGW320*292*17.53202921717.5

Installation Instructions

FAQ

1.our price:
Our price is not the lowest one, but compared with the same quality level product,ours is the best one.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Kind: Oil Seals,O-ring, Rod/Piston seal, Gas seal, Guide elements, Large sized Seals Customized Seals.
Material: NBR/EPDM/FKM/Silicone/HNBR/PU

4. Shipping:
Quickly delivery, with several delivery ways, such as DHL/FEDEX/UPS/TNT express, Air and Ocean shipping way. We have several express accounts and can help you save cost. 


5, about customized Service:
Drawings or samples, it is enough. We can produce colored rubber seal just based on your drawing or samples with kinds of colors. We also can give the professional advice based on your requirement.

 

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