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DSH heavy hydraulic cylinder piston seals supplier for coal mining machinery

DSH heavy hydraulic cylinder piston seals supplier for coal mining machinery

DSH heavy hydraulic cylinder piston seals supplier for coal mining machinery

Delivery Time
3-7 days
Standard product/Customized product
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Company Advantages
1. DSH hydraulic piston seals suppliers is designed and made as per the prevailing market norms and guidelines. It also offers stiffness and creep resistance
2. Being specialized in the serving customers is a positive point for the development of DSH. The low permeability makes it unmatched for service in gaseous media
3. Products under the supervision of professionals, through strict quality inspection, to ensure product quality. It is resistant to virtually every known chemical and solvent
4. This product is superior to other products because of its excellent performance, durability and other characteristics. It features temperature cycling resistance (material degradation, heat ageing
5. Our professional and skilled quality controllers carefully inspect the product at every step of the production process to ensure that its quality remains excellent without any defects. It will not stick to the metal surface

SPG is a compact double-acting piston seal for medium to heavy duty applications. The reinforced, thermally stable thermoplastic sealing surface with stepped joints allows the seal to pass through the port, making it ideal for double acting telescopic cylinders.

It consists of a bronze-filled PTFE face ring preloaded by a square-section NBR ring. The cover ring is precision machined from a compression molded blank. Compression molding of this material provides consistently superior physical properties compared to automated molded products. The machined face ring has a chamfer for easy installation and the surface finish is not affected by the “orange peel” effect of the molded product. Since only the PTFE face ring is in contact with the sliding surface, the friction is very low and the stick-slip motion is eliminated. The width of the housing allows the designer to use a narrow width piston, but it is recommended to install enough bearings on either side of the seal.


  • High static and dynamic sealing effect;

  • High resistance to extrusion;

  • low friction, high efficiency;

  • no sliding start, no adhesion;

  • High wear resistance and high operational reliability;

  • HWide application temperature range and high chemical resistance, depending on the choice of material for the ring;

  • Easy installation.

◆◆ PTFE,nbr/fkm rubber

Material descriptionPTFE filled Bronze, PTFE filled carbon fiber and MoS2, PTFE filled Graphite, PTFE filled PI, and so on.
Available ColorBlack, green, coffee, white, brown, gold and so on
Material StrengthSPG seals have excellent chemical resistance and wear resistance, particular rigidity and almost unlimited ozone, weathering and aging resistance.
Applied device:Excavators / standard cylinders / Mobile hydraulics / Presses

DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal
DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal-1
DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal-2
DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal-3
DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal-4
DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal-5

◆◆ PTFE,nbr/fkm rubber

DSH-High-quality Piston Seal Ring | Excavator Heavy Duty Piston Seal-6

Technical Data

PressureTemperatureSliding speedMedium
 Elastomerslide ring
Standard  (on request)FKMPTFE-carbon
Max Gap EE≤0.6mmE≤0.4mmE≤0.2mm
Order Example for standard version:
Diameter  D=100mm   
Order Code: SPG 100*85*7.5
Installation Dimension table based on Metric Size(mm)
Order List
Order NumberDdHh
Order NumberDdHh
SPG 03003020.54.54.3SPG 20402041821110.8
SPG 031531.5224.54.3SPG 21002101881110.8
SPG 03203222.54.54.3SPG 21502151931110.8
SPG 03503525.54.54.3SPG 22002201981110.8
SPG 035535.5264.54.3SPG 22402242021110.8
SPG 040040304.54.3SPG 22502252031110.8
SPG 045045354.54.3SPG 23002302081110.8
SPG 050050404.54.3SPG 24002402181110.8
SPG 055055454.54.3SPG 25002502281110.8
SPG 056056464.54.3SPG 26002602361211.7
SPG 060060504.54.3SPG 27002702461211.7
SPG 063063487.57.3SPG 28002802561211.7
SPG 065065507.57.3SPG 29002902661211.7
SPG 069069547.57.3SPG 30003002761211.7
SPG 070070557.57.3SPG 31003102861211.7
SPG 071071567.57.3SPG 32003202961211.7
SPG 075075607.57.3SPG 3300330308109.75
SPG 080080657.57.3SPG 36003603361211.7
SPG 085085707.57.3SPG 40004003761211.7
SPG 090090757.57.3SPG 48504854551514.8
SPG 095095807.57.3SPG 50005004701514.8
SPG 1000100857.57.3SPG 550055051517.517.2
SPG 1050105907.57.3SPG 60006005701514.8
SPG 1080108927.57.3SPG 65006506201514.8
SPG 1100110947.57.3SPG 72007206901314.8
SPG 1120112967.57.3SPG 80008007851312.7
SPG 12001201047.57.3SPG 90009008702524.5
SPG 12501251097.57.3SPG 93009308902019
SPG 13001301147.57.3SPG 93509359201312.7
SPG 13501351197.57.3SPG 95009509251817.7
SPG 14001401247.57.3SPG 1000010009602019.7
SPG 14501451297.57.3SPG 10600106010202019.7
SPG 15001501347.57.3SPG 11200112010802019.7
SPG 15501551397.57.3SPG 11500115011102019.7
SPG 16001601447.57.3SPG 11800118011302019.7
SPG 17001701481110.8SPG 12100121011702019
SPG 18001801581110.8SPG 12500125012102019.7
SPG 19001901681110.8SPG 12600126012202019.7
SPG 20002001781110.8SPG 14000140013502019.7

Company Features
1. Our main business is to design, produce, develop and sell hydraulic piston seals suppliers . In order to meet the needs of products developing, professional engineers are equipped to ensure the quality of hydraulic piston seal design .
2. Guangdong DSH Seals Technology Co., Ltd is powerful with its advanced equipment and high production efficiency.
3. Advanced equipment, sophisticated technology, high quality service is Guangdong DSH Seals Technology Co., Ltd's guarantee. DSH Seals makes great efforts to achieve the strategic goal: The Top brand in piston seal industry in the world. Get quote!
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