Hydraulic Cylinder Symmetrical Seals U Cup Seals Uph Piston and Rod Seals

• Customization: Available
• Material: NBR/FKM/PTFE/PU/POM\PA/Peek/Silicon/EPDM
• Application: Hydraulic Cylinder/Construction Machinery
• Model NO.: UPH
• Type: Symmetric Seals
• Performance: Durable/Water Resistant/Oil Resistant/High Tempera
• Shape: Symmetric 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

The UPH profile is a U-ring type single acting seal with symmetrical polyurethane lips. It can be used for both rod and piston applications. 

Technical data
Temperature		-30°C / +100°C
Pressure		Up to 40MPa
Speed		Up to 0.5m/s
Medias		Mineral oil-based hydraulic fluids
Material		PU
Note		The above data are maximum values and cannot be used at the same time. For example, the maximum operating speed depends on material type, pressure, temperature and gap value.Temperature range also dependent on medium.
Applications		Widely used at industries such as mobile machinery, light machinery, agricultural machinery, injection molding machinery, forklifts, cranes, automobiles, forestry machinery and mining machinery, etc.
Advantages		Good pressure-adapted sealing effect Unaffected by high loads and deflections of the piston rod High resistance against extrusion. Lower friction in the low-pressure range compared with double-lipped versions. Excellent in static and dynamic sealing Low requirements on groove roughness Easy installation

Item No.	d	D	h	φd	φD	φD1	HA	HB	C
UPH-6.3	6.3	16.3	7.5	6.3	16.3	15.3	8.5	10.5	2.5
UPH-6.3A		16.3	8	6.3	16.3	15.3	9	11
UPH-7.1	7.1	17.1	7.5	7.1	17.1	16.1	8.5	10.5
UPH-7.1A		17.1	8	7.1	17.1	16.1	9	11
UPH-8	8	18	7.5	8	18	17	8.5	10.5
UPH-8A		18	8	8	18	17	9	11
UPH-10A		20	8	10	20	19	9	11
UPH-11.2	11.2	21.2	7.5	11.2	21.2	20.2	8.5	10.5
UPH-11.2A		21.2	8	11.2	21.2	20.2	9	11
UPH-12	12	25	8	12	25	24	9	11
UPH-12.5A		22.5	8	12.5	22.5	21.5	9	11
UPH-14	14	24	7.5	14	24	23	8.5	10.5
UPH-15A	15	25	8	15	25	24	9	11
UPH-15		28	10	15	28	27	11	13
UPH-16	16	26	7.5	16	26	25	8.5	10.5
UPH-18A	18	28	8	18	28	27	9	11
UPH-18		31	10	18	31	30	11	13	3.5
UPH-20A	20	30	8	20	30	29	9	11
UPH-20		33	10	20	33	32	11	13
UPH-22	22	35	10	22	35	34	11	13
UPH-22.4A	22.4	32.4	8	22.4	32.4	31.4	9	11
UPH-22.4		35.4	10	22.4	35.4	34.4	11	13
UPH-25A	25	35	8	25	35	34	9	11
UPH-25		38	10	25	38	37	11	13
UPH-25.5	25.5	35.5	8	25.5	35.5	34.5	9	12
UPH-27	27	40	10	27	40	39	11	14
UPH-28A	28	40	10	28	40	39	11	14
UPH-28		41	10	28	41	40	11	14
UPH-30	30	43	10	30	43	42	11	14
UPH-30A		45	10	30	45	44	11	14
UPH-31.5	31.5	44.5	10	31.5	44.5	43.5	11	14
UPH-34	34	50	12	34	50	49	13	16
UPH-35B	35	50	10	35	50	49	11	14	4
UPH-35		50	12	35	50	49	13	16
UPH-35.5A	35.5	50.5	10	35.5	50.5	49.5	11	14
UPH-35.5		51.5	12	35.5	51.5	50.5	13	16
UPH-40A	40	55	10	40	55	54	11	14
UPH-40		56	12	40	56	55	13	16
UPH-40C		60	12	40	60	59	13	16
UPH-41	41	56	10	41	56	55	11	14
UPH-45A	45	60	10	45	60	59	11	14
UPH-45		61	12	45	61	60	13	16
UPH-47	47	63	12	47	63	62	13	16
UPH-48	48	63	10	48	63	62	11	14
UPH-50A	50	65	10	50	65	64	11	14
UPH-50		66	12	50	66	65	13	16
UPH-51	51	71	12	51	71	70	13	16
UPH-53	53	69	12	53	69	68	13	16
UPH-55	55	71	12	55	71	70	13	16
UPH-60	60	76	12	60	76	75	13	16
UPH-60A		80	12	60	80	79	13	16
UPH-63	63	79	12	63	79	78	13	16
UPH-63A		83	12	63	83	82	13	16
UPH-64	64	80	12	64	80	79	13	16
UPH-70A	70	90	12	70	90	89	13	16	5
UPH-70		90	15	70	90	89	16	19
UPH-75A	75	95	12	75	95	94	13	16
UPH-75		95	15	75	95	94	16	19
UPH-80A	80	100	12	80	100	99	13	16
UPH-80		100	15	80	100	99	16	19
UPH-85A	85	105	12	85	105	104	13	16
UPH-85		105	15	85	105	104	16	19
UPH-90A	90	110	12	90	110	109	13	16
UPH-90		110	15	90	110	109	16	19
UPH-92A	92	112	12	92	112	111	13	16
UPH-95A	95	115	12	95	115	114	13	16
UPH-95		115	15	95	115	114	16	19
UPH-100A	100	120	12	100	120	118	13	16
UPH-100		120	15	100	120	118	16	19
UPH-100B		125	15	100	125	123	16	19
UPH-105	105	125	15	105	125	123	16	19
UPH-106	106	126	15	106	126	124	16	19
UPH-110	110	130	15	110	130	128	16	19
UPH-112	112	132	15	112	132	130	16	19
UPH-115	115	135	15	115	135	133	16	19
UPH-118	118	138	15	118	138	136	16	19
UPH-120	120	140	15	120	140	138	16	19
UPH-125A	125	145	15	125	145	143	16	19	6.5
UPH-125		150	19	125	150	148	20	23
UPH-130A	130	150	15	130	150	148	16	19
UPH-130		155	19	130	155	153	20	23
UPH-132A	132	152	15	132	152	150	16	19
UPH-132		157	19	132	157	155	20	23
UPH-135B	135	155	15	135	155	153	16	19
UPH-135A		160	15.7	135	160	158	17	20
UPH-135		160	19	135	160	158	20	23
UPH-140A	140	160	15	140	160	158	16	19
UPH-140		165	19	140	165	163	20	23
UPH-145A	145	165	15	145	165	163	16	19
UPH-145		170	19	145	170	168	20	23
UPH-155B	155	180	15	155	180	178	16	20
UPH-155		180	19	155	180	178	20	24
UPH-160A	160	185	15	160	185	183	16	20
UPH-160		185	19	160	185	183	20	24
UPH-175B	175	200	15	175	200	198	16	20
UPH-175		200	19	175	200	198	20	24
UPH-180A	180	205	15	180	205	203	16	20
UPH-180		205	19	180	205	203	20	24
UPH-200A	200	225	15	200	225	223	16	20
UPH-200		225	19	200	225	223	20	24
UPH-225A	225	250	18	225	250	248	19	23	8
UPH-225		250	19	225	250	248	20	24
UPH-236	236	261	19	236	261	259	20	24
UPH-250	250	275	19	250	275	273	20	24
UPH-265	265	297	24	265	297	295	26	30
UPH-270A	270	300	18	270	300	298	19	23
UPH-270		300	24	270	300	298	26	30
UPH-280A	280	310	22	280	310	308	24	28	10
UPH-280		312	24	280	312	310	26	30
UPH-283	283	315	24	283	315	313	26	30
UPH-290A	290	320	18	290	320	318	19	23
UPH-290		320	22	290	320	318	24	28
UPH-300	300	332	24	300	332	330	26	30
UPH-310A	310	340	18	310	340	338	19	23
UPH-310		340	22	310	340	338	24	28
UPH-315	315	347	24	315	347	345	26	30
UPH-320A	320	340	12	320	340	338	13	17
UPH-320		350	22	320	350	348	24	28
UPH-323	323	355	24	323	355	353	26	30
UPH-330A	330	355	16	330	355	353	17	21
UPH-330B		356	20	330	356	354	22	26
UPH-330		360	22	330	360	358	24	28
UPH-335A	335	355	14	335	355	353	15	19
UPH-335		367	24	335	367	365	26	30
UPH-340	340	370	22	340	370	368	24	28
UPH-345	345	365	14	345	365	363	15	19
UPH-350A	350	370	14	350	370	368	15	19
UPH-350		380	22	350	380	378	24	28
UPH-355A	355	385	22	355	385	383	24	28
UPH-355		387	24	355	387	385	26	30
UPH-360	360	390	22	360	390	388	24	28
UPH-365	365	395	22	365	395	393	24	28
UPH-368	368	400	24	368	400	398	26	30
UPH-370A	370	400	23	370	400	398	25	29
UPH-370		400	25	370	400	398	27	31
UPH-371	371	396	16	371	396	394	17	21
UPH-375	375	407	24	375	407	405	26	30
UPH-380A	380	400	15	380	400	398	16	20
UPH-380B		410	15	380	410	408	16	20
UPH-380		420	30	380	420	418	32	36
UPH-390	390	420	22	390	420	418	24	28
UPH-395	395	425	22	395	425	423	24	28
UPH-400A	400	430	22	400	430	428	24	28
UPH-400B		430	25	400	430	428	27	31
UPH-400		432	24	400	432	430	26	30
UPH-420	420	455	25	420	455	453	27	32
UPH-425	425	457	24	425	457	455	26	31
UPH-430	430	470	20	430	470	468	22	27
UPH-435	435	470	25	435	470	468	27	32
UPH-440	440	480	35	440	480	478	37	42
UPH-445	445	470	18	445	470	468	19	24
UPH-450A	450	480	22	450	480	478	24	29
UPH-450		482	24	450	482	480	26	31
UPH-460	460	500	20	460	500	498	22	27
UPH-475	475	507	24	475	507	505	26	31
UPH-480A	480	505	18	480	505	503	19	24
UPH-490	490	530	25	490	530	528	27	32
UPH-520A	520	550	17	520	550	548	18	23
UPH-525	525	555	15	525	555	553	16	21
UPH-530A	530	570	20	530	570	568	22	27
UPH-540	540	560	14	540	560	558	15	20
UPH-570A	570	600	17	570	600	598	18	23
UPH-600A	600	630	20	600	630	628	22	27
UPH-600B		630	28	600	630	628	30	35
UPH-600		640	30	600	640	638	32	37
UPH-640	640	685	25	640	685	683	27	32	12
UPH-700A	700	730	15	700	730	728	16	21
UPH-760	760	800	34	760	800	798	36	41
UPH-768	768	800	30	768	800	798	32	37
UPH-818	818	850	24	818	850	848	26	31
UPH-825A	825	850	15.5	825	850	848	16.5	21.5
UPH-825		860	27	825	860	858	29	34
UPH-925	925	950	14	925	950	948	15	20
UPH-950	950	980	20	950	980	978	22	27
UPH-1020A	1020	1050	18	1020	1050	1048	19	24
UPH-1025	1025	1055	15	1025	1055	1053	16	21
UPH-1100	1100	1140	20	1100	1140	1138	22	27
UPH-1220	1220	1280	30	1220	1280	1278	32	37
UPH-1560	1560	1600	20	1560	1600	1598	22	27
UPH-1620	1620	1680	30	1620	1680	1678	32	37

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.