DNS - PTFE Piston Rotary Shaft Seal ring

DNS - PTFE Piston Rotary Shaft Seal ring

Type
Delivery Time
3-7 days
Quality
High-quality
Service
Standard product/Customized product
Brand
DSH
Price
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Quantity Needed:
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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 with stand 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 description PTFE filled Bronze, PTFE filled carbon fiber and MoS2, PTFE filled Graphite,
PTFE filled PI, PTFE filled Ekonol, PU and so on.
Available Color Coffee, 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 device Rotary 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
Pressure Temperature Sliding speed Medium
Standard ≤30 MPa -35…+200 ℃ ≤2 m/s Minderal oil based hydraulic fluids, barely flammable hydraulic fluids,water,air and others.
Material
O ring slide ring
Standard NBR PTFE-Bronze
Standard(on request) FKM PTFE-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 H9 d h9 L
+0.2
d1 R≤ C≥ Max Gap E
100bar 200bar 300bar
8~39 D-4.9 2.2 1.8 0.4 2 0.15 0.1 0.05
40~79 D-7.5 3.2 2.65 0.6 2.5 0.2 0.15 0.1
80~132 D-11 4.2 3.55 1 3.5 0.25 0.2 0.15
140~329 D-15.5 6.3 5.3 1.3 5 0.3 0.25 0.2
330~669 D-21 8.1 7 1.8 6.5 0.45 0.3 0.25
670~999 D-28 9.5 8.6 2.5 7.5 0.45 0.3 0.25
Order List
Order Number D H9 d h9 L  +0.2 Order Number D H9 d h9 L  +0.2
DNS0080 8 3.1 2.2 DNS1700 170 154.5 6.3
DNS0100 10 5.1 2.2 DNS1800 180 164.5 6.3
DNS0120 12 7.1 2.2 DNS1900 190 174.5 6.3
DNS0150 15 10.1 2.2 DNS2000 200 184.5 6.3
DNS0160 16 11.1 2.2 DNS2100 210 194.5 6.3
DNS0180 18 13.1 2.2 DNS2200 220 204.5 6.3
DNS0200 20 15.1 2.2 DNS2400 240 224.5 6.3
DNS0220 22 17.1 2.2 DNS2500 250 234.5 6.3
DNS0250 25 20.1 2.2 DNS2800 280 264.5 6.3
DNS0280 28 23.1 2.2 DNS3000 300 284.5 6.3
DNS0300 30 25.1 2.2 DNS3200 320 304.5 6.3
DNS0320 32 27.1 2.2 DNS3500 350 329 8.1
DNS0350 35 30.1 2.2 DNS3600 360 339 8.1
DNS0380 38 33.1 2.2 DNS4000 400 379 8.1
DNS0400 40 32.5 3.2 DNS4200 420 399 8.1
DNS0420 42 34.5 3.2 DNS4500 450 429 8.1
DNS0450 45 37.5 3.2 DNS4800 480 459 8.1
DNS0480 48 40.5 3.2 DNS5000 500 479 8.1
DNS0500 50 42.5 3.2 DNS5200 520 499 8.1
DNS0520 52 44.5 3.2 DNS5500 550 529 8.1
DNS0550 55 47.5 3.2 DNS6000 600 579 8.1
DNS0600 60 52.5 3.2 DNS6200 620 599 8.1
DNS0630 63 55.5 3.2 DNS6300 630 609 8.1
DNS0700 70 62.5 3.2 DNS6400 640 619 8.1
DNS0750 75 67.5 3.2 DNS6500 650 629 8.1
DNS0800 80 69 4.2 DNS6600 660 639 8.1
DNS0900 90 79 4.2 DNS6700 670 642 9.5
DNS1000 100 89 4.2 DNS6800 680 652 9.5
DNS1050 105 94 4.2 DNS7000 700 672 9.5
DNS1100 110 99 4.2 DNS7200 720 692 9.5
DNS1150 115 104 4.2 DNS7500 750 722 9.5
DNS1200 120 109 4.2 DNS8000 800 772 9.5
DNS1250 125 114 4.2 DNS8200 820 792 9.5
DNS1300 130 119 4.2 DNS8500 850 822 9.5
DNS1400 140 124.5 4.2 DNS9000 900 872 9.5
DNS1500 150 134.5 4.2 DNS9500 950 922 9.5
DNS1600 160 144.5 6.3
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