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DNS - PTFE Piston Rotary Shaft Seal ring

DNS - PTFE Piston Rotary Shaft Seal ring

Type
DNS
Delivery Time
3-7 days
Quality
High-quality
Service
Standard product/Customized product
Brand
DSH
Price
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DNS is the single or double acting piston rotary seal consists of a filled PTFE groove friction ring and a pre-tensioned rubber O-ring. It is usually used with a guide ring. Double-acting piston seal for pivoting motions in hydraulic systems; for standardised housing according to ISO 7425/1; preferably for usage in hydraulic joints and rotary joints. Rotary hydraulic transmission exists in industries such as engineering machinery, construction machinery and mobile devices. It seals the rod, shaft, pin, rotary distributors, hydraulic motors and rotary joints which make rotating or swinging motion. Double acting rotary seal, can undergo pressure from both sides or alternating pressure. Installed in grooves of ISO 7425 standard. Single acting structure of higher rotating speed.

DSH Seals’ DNS, the "rotary seal" provides a reliable and durable radial seal. These radial seals have a very low coefficient of friction to ensure a long-term optimum seal.

In addition, a "rotary seal" with a high withstand voltage (about 30 MPa) can withstand a sharp rise in temperature and is completely unaffected by the stick-slip effect.


Characteristics

  • Low friction coefficient; no stick-slip effect on startup.

  • Excellent abrasion and extrusion resistance.

  • The grooves provide an integrated lubrication system.

  • Excellent dimensional stability.

  • Highly resistant to hydraulic fluids.


◆◆ PTFE, nbr / fkm rubber


Material descriptionPTFE filled Bronze, PTFE filled carbon fiber and MoS2, PTFE filled Graphite, PTFE filled PI, PTFE filled Ekonol, PU and so on.
Available ColorCoffee, green and so on
Material Strength

A two-piece sealing device for sealing piston rod includes a PTFE profile ring and an O-ring as a preloading element.
advantage:1.Double-acting rod seal is used for rotating motion in hydraulic system, preferably for hydraulic joints and rotating joints
                     2.Strong resistance to hydraulic fluidsLow friction
                     3.Non-stick-slipShort building.

Temperature-35~+200℃
Speed≤2m/s
Pressure≤30MPa
Applied deviceRotary Distributor/Hinge Device/Mobile Hydraulic Equipment/Machine Tool, etc.


DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-1
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-2
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-3
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-4
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-5
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-6
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-7
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-8
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-9
DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-10


◆◆ Rotary External Seals - DNS


DSH-Find Shaft Oil Seal High Pressure Rotary Seal From Dsh Seals-11

Technical Data
 PressureTemperatureSliding speedMedium
Standard≤30 MPa-35…+200 ℃≤2 m/sMinderal oil based hydraulic fluids, barely flammable hydraulic fluids,water,air and others.
Material
 O ringslide ring
StandardNBRPTFE-Bronze
Standard(on request)FKMPTFE-carbon
Order Example for standard version:
Diameter  D=100mm   
Order Code: DNS 100*89*4.2
Installation Dimension table based on Metric Size(mm)
D H9d h9L      +0.2       d1R≤C≥Max Gap E
100bar200bar300bar
8~39D-4.92.21.80.420.150.10.05
40~79D-7.53.22.650.62.50.20.150.1
80~132D-114.23.5513.50.250.20.15
140~329D-15.56.35.31.350.30.250.2
330~669D-218.171.86.50.450.30.25
670~999D-289.58.62.57.50.450.30.25
Order List
Order NumberD H9d h9L  +0.2
Order NumberD H9d h9L  +0.2
DNS008083.12.2DNS1700170154.56.3
DNS0100105.12.2DNS1800180164.56.3
DNS0120127.12.2DNS1900190174.56.3
DNS01501510.12.2DNS2000200184.56.3
DNS01601611.12.2DNS2100210194.56.3
DNS01801813.12.2DNS2200220204.56.3
DNS02002015.12.2DNS2400240224.56.3
DNS02202217.12.2DNS2500250234.56.3
DNS02502520.12.2DNS2800280264.56.3
DNS02802823.12.2DNS3000300284.56.3
DNS03003025.12.2DNS3200320304.56.3
DNS03203227.12.2DNS35003503298.1
DNS03503530.12.2DNS36003603398.1
DNS03803833.12.2DNS40004003798.1
DNS04004032.53.2DNS42004203998.1
DNS04204234.53.2DNS45004504298.1
DNS04504537.53.2DNS48004804598.1
DNS04804840.53.2DNS50005004798.1
DNS05005042.53.2DNS52005204998.1
DNS05205244.53.2DNS55005505298.1
DNS05505547.53.2DNS60006005798.1
DNS06006052.53.2DNS62006205998.1
DNS06306355.53.2DNS63006306098.1
DNS07007062.53.2DNS64006406198.1
DNS07507567.53.2DNS65006506298.1
DNS080080694.2DNS66006606398.1
DNS090090794.2DNS67006706429.5
DNS1000100894.2DNS68006806529.5
DNS1050105944.2DNS70007006729.5
DNS1100110994.2DNS72007206929.5
DNS11501151044.2DNS75007507229.5
DNS12001201094.2DNS80008007729.5
DNS12501251144.2DNS82008207929.5
DNS13001301194.2DNS85008508229.5
DNS1400140124.54.2DNS90009008729.5
DNS1500150134.54.2DNS95009509229.5
DNS1600160144.56.3



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