Hydraulic Cylinder Engineering Construction Machinery Spgw Spgo Bronze PTFE NBR POM Piston Compact Combined Seal

• Customization: Available
• Material: NBR/FKM/PTFE/PU/POM\PA/Peek/Silicon/EPDM
• Application: Hydraulic Cylinder/Construction Machinery
• Model NO.: SPGW
• Type: Piston and Rod Seal
• Performance: Water Resistant/Oil Resistant/Temperature Resistan
• Shape: Spgw Seals
• Standard: Standard
• Speed: High Speed
• Lip: Single Lip/ Double Lips
• Color: Black, Brown, or as Your Request
• Hardness: 30-90 Shore According to Work Environment
• Working Medium: Hydraulic Oil
• Transport Package: Carton or as Your Required
• Specification: All Standard, Customized
• Trademark: NextGen Tech
• Origin: Guangzhou, China
• HS Code: 4016931000
• Production Capacity: 500000PCS/Month

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
Pressure		Up to 45MPa
Speed		Up to 1.5m/s
Medias		Mineral oil based hydraulic fluids /water  oil and glycol / oil emulsions
Material		Elastomer  NBR Friction ring Bronze-filled PTFE Back-up rings Polyoxymethylene (POM)
Advantages		Low friction coefficient; no stick-slip effect Possible increase in extrusion gaps Excellent extrusion resistance even during pressure peaks Excellent abrasion resistance Assembled by deformation
Applications		The 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 number	Bore diameter	Groove diameter	Seal height	Groove width
	ØD1 H9	Ød1 h9	H1	L1 0/+0.20
SPGW40*30*9	40	30	8.5	9
SPGW45*35*9	45	35	8.5	9
SPGW50*36*9	50	36	8.5	9
SPGW55*41*9	55	41	8.5	9
SPGW60*46*9	60	46	8.5	9
SPGW63*48*11	63	48	10.5	11
SPGW65*50*11	65	50	10.5	11
SPGW70*55*11	70	55	10.5	11
SPGW75*60*11	75	60	10.5	11
SPGW80*65*11	80	65	10.5	11
SPGW85*70*11	85	70	10.5	11
SPGW90*75*11	90	75	10.5	11
SPGW95*80*11	95	80	10.5	11
SPGW100*85*12.5	100	85	12	12.5
SPGW105*90*12.5	105	90	12	12.5
SPGW110*95*12.5	110	95	12	12.5
SPGW115*100*12.5	115	100	12	12.5
SPGW120*105*12.5	120	105	12	12.5
SPGW125*102*16	125	102	15.5	16
SPGW130*107*16	130	107	15.5	16
SPGW130*116*17.5	130	116	17	17.5
SPGW135*112*16	135	112	15.5	16
SPGW140*115*16	140	115	15.5	16
SPGW140*117*16	140	117	15.5	16
SPGW150*127*16	150	127	15.5	16
SPGW150*134*16	150	134	15.5	16
SPGW160*137*16	160	137	15.5	16
SPGW170*147*16	170	147	15.5	16
SPGW180*157*16	180	157	15.5	16
SPGW185*162*16	185	162	15.5	16
SPGW190*167*16	190	167	15.5	16
SPGW200*177*16	200	177	15.5	16
SPGW210*187*16	210	187	15.5	16
SPGW220*197*16	220	197	15.5	16
SPGW225*202*16	225	202	15.5	16
SPGW230*207*16	230	207	15.5	16
SPGW240*217*16	240	217	15.5	16
SPGW250*222*17.5	250	222	17	17.5
SPGW260*232*17.5	260	232	17	17.5
SPGW270*242*17.5	270	242	17	17.5
SPGW280*252*17.5	280	252	17	17.5
SPGW300*272*17.5	300	272	17	17.5
SPGW320*292*17.5	320	292	17	17.5

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.