Heavy DanaStep R310

Heavy DanaStep R310 is a heavy version of DanaStep. Heavy DanaStep is designed for heavy industry like hydraulic presses and even steel mills. Heavy DanaStep has the well-known profile that enables the seal to draw liquid back into the system.

With two Dana Steps in tandem combined with a double wiper, there is zero leakage in almost any application. Specially when Heavy DanaStep is made in our new materials based on modified PTFE, DanaFlon 24, DanaFlon 45 and DanaFlon 51 an optimal form stability and extrusion resistance is achieved.

Product details
Technical details
Extreme chemical resistance
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Advantages:

  • High formstability against extrusion
  • High dynamic and static sealing effect
  • High extrusion resistance
  • Low friction
  • No stick-slip
  • Small groove
  • High operational stability
  • Suitable for a wide variety of media

APPLICATION EXAMPLES

  • Steel mills & Presses

Working conditions:

  • Pressure: 40 Mpa
  • Temperature: NBR O-ring: -30 to + 100 °C FPM O-ring: -10 to + 200 °C
  • Application: High pressure, Intensive movement
  • Speed: 15 m/s
  • Diameter range: 100 to *3000 mm
  • Action: Single-acting
  • Seals larger than 1000mm please contact us for design details
Frequently used - DanaFlon Material
Frequently used Material DanaFlon
Seals, intensive movement
High pressure
–200 to +260 °C
–200 to +260 °C
–200 to +260 °C
–200 to +260 °C
–200 to +260 °C
Basis material
PTFE
Modified PTFE
Modified PTFE
PTFE
Modified PTFE
DanaFlon
24
25*
45
55
51*
Filler
Bronze & Additives
Bronze & Additives
Carbon fibre
Glass & MoS2
Glass & MoS2
Colour
Brownish
Brownish
Dark Gray
Light Gray
Light Gray
Extreme form stability and extrusion resistance
Yes
Yes
Yes
Yes
Yes
Lubricating media
Yes
Yes
Yes
Yes
Yes
Extreme wear resistance
Yes
Yes
Yes
Yes
Yes
Wide range of media
No
No
Yes
Yes
Yes
Non-lubricating media
No
No
Yes
Yes
Yes
Food applications
No
No
No
No
No
Conforms to food regulation
No
No
No
No
No

*DF25 is similar to the well known DF24 and *DF51 is similar to the well known DF55, but they has even higher formstability against extrusion.
The Rubber-Profile-Rings may limit the temperature range and need to be compatible with the media.
The performance of the seal will always depend on the total picture of working conditions.
Verifying the performance of the seal can only be done by test at the actual working conditions.

Heavy DanaStep R310

Technical details

Here you can see the technical details

* Recommended finish for dynamic sealing surface
  • Ra max (0.2 μm)
  • Rz max (1.25 μm)
  • Rp max (0.63 μm)
  • Tp = 50 - 70% at depth of p= 0.25 Rz
Heading #3
Serie
Rod
øA H8
G + 0,2– 0
R
C
Max radial Clearance
øB f8
16 MPa
26 MPa
32 MPa
40 MPa
R31
02
100 – 200
øB + 20
10,0
0,4
7,5
0,75
0,50
0,40
0,40
03
220 – 300
øB + 25
12,5
0,4
10
0,75
0,65
0,55
0,50
04
300 – 540
øB + 30
15,0
0,8
12
0,75
0,65
0,55
0,50
05
530 – 690
øB + 35
17,5
1,2
12
0,75
0,65
0,55
0,50
06
690 – 2000
øB + 40
20,0
1,2
15
0,80
0,70
0,60
0,55

Max radial clearance is based in DanaFlon 24 and 100°C. For other hi-filled DanaFlon compounds please ask Dana-Seals A/S.

Clearance: At pressure >40Mpa use diameter tolerance H7/f7 (Bore/Rod.)

Order example - Danastep for 300 mm rod
Energizer

7 NBR

8 FPM

Delivery times

For special requests, please complete our Request form or call us on +45 4922 4400.

Request form
+45 4922 4400

Since the founding in 1992, Dana-Seals has strived to be the customer’s preferred go-to supplier for standard and advanced sealing solutions for hydraulic and pneumatic equipment

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