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Show general overview | Load overview |
Special dimensions on request | Request now |
GENERAL
The PTFE rod seal set CRR consists off a PTFE-face seal which takes care of the dynamic sealing on the inside diameter of the rod and a clamped O-Ring which provides a pretension on the face seal and transfers the static sealing on the outside diameter. With intensified pressure of the system, the O-Ring pretension increases, caused to the design and therewith the contact pressure of the face seal against the rod. To be sealed are piston-rods and plungers within hydraulic cylinders, if compared to sealing with elastomeric seals, a lower friction is wanted.
ADVANTAGES ARE
- low sliding friction and breakaway, low stick-slip effect for consistant motion, even with low sliding speed
- highly extrusion resistant
- low abrasion
- highly temperature resistant
- multiple applications, through appropriate selection of O-Ring compound
- flexible chemical compatibility through appropriate selection of O-Ring compound
- available up to 2000 mm diameter
PLEASE NOTE
With this sealing profile it’s very important to achieve an exact guidance of the metal components through guide-tapes or wear-rings.
APPLICATION RANGE | |
working pressure: | ≤ 35 MPa (350 bar) |
operation temperature: | -30 to +100 °C* >FKM 200 °C< |
sliding Speed: | ≤ 4 m/s |
MOUNTING INSTRUCTIONS
With a diameter of <10 mm open seal housings are necessary.
INSTALLATION
For diameters < 10 mm open grooves are required.
MATERIAL | |
sealing rings: | modified PTFE (PT012) |
O-rings: | NBR-elastomer with approximately 70 Shore A |
In certain cases (high temperature, speed, specificresistance to pressure, or use of water, HFA-, HFB- fluids a.s.o.), we advise to take another sealing cross section, or please contact with our application technology.
ORDER EXAMPLE
Rod diameter = 50 mm
CRR 0500 PT012 70N1 D
CRR = | Profile |
0500 = | Rod Ø x 10 |
PTO12 = | Compound |
70N1 = | Serial number, Last digit: O-ring code |
D = | Cross section |
* according to compound selection of the O-Ring
HOUSING DIMENSIONS
Series No. | Cross-section | O-ring | Recommended rod Ø range | Groove width | Groove depth | Gap max. | Radius max. | |
cross-section | d (mm) | |||||||
(mm) | ≥ | < | L (mm) | G (mm) | e (mm) | R1 (mm) | ||
Housing dimensions for O-Ring grooves without back-up ring | ||||||||
70N1 | A | 1,78 | 4 | 10 | 2,4 | 1,45 | 0,13 | 0,5 |
70N1 | B | 2,62 | 10 | 20 | 3,6 | 2,25 | 0,13 | 0,5 |
70N1 | C | 3,53 | 20 | 40 | 4,8 | 3,1 | 0,15 | 0,5 |
70N1 | D | 5,33 | 40 | 120 | 7,1 | 4,7 | 0,17 | 0,9 |
70N1 | E | 6,99 | 120 | 400 | 9,5 | 6,1 | 0,25 | 0,9 |
Housing dimensions for O-Ring grooves with 1 back-up ring | ||||||||
71N1 | A | 1,78 | 4 | 10 | 3,8 | 1,45 | 0,13 | 0,5 |
71N1 | B | 2,62 | 10 | 20 | 5,0 | 2,25 | 0,13 | 0,5 |
71N1 | C | 3,53 | 20 | 40 | 6,2 | 3,1 | 0,15 | 0,5 |
71N1 | D | 5,33 | 40 | 120 | 8,8 | 4,7 | 0,17 | 0,9 |
71N1 | E | 6,99 | 120 | 400 | 10,5 | 6,1 | 0,25 | 0,9 |
Housing dimensions for O-Ring grooves with 2 back-up rings | ||||||||
72N1 | A | 1,78 | 4 | 10 | 3,8 | 1,45 | 0,13 | 0,5 |
72N1 | B | 2,62 | 10 | 20 | 5,0 | 2,25 | 0,13 | 0,5 |
72N1 | C | 3,53 | 20 | 40 | 6,2 | 3,1 | 0,15 | 0,5 |
72N1 | D | 5,33 | 40 | 120 | 8,8 | 4,7 | 0,17 | 0,9 |
72N1 | E | 6,99 | 120 | 400 | 10,5 | 6,1 | 0,25 | 0,9 |
Special sizes are available quickly.
O-RING DESIGNATIONS IN PTFE-SEALS
Material | Härte | OR-Code |
NBR | 70+/-5 | N1 |
FKM | 75+/-5 | V2 |
NB 304 (HNBR) | 75+/-5 | N3 |
EPDM | 75+/-5 | E4 |
NB 578 | 75+/-5 | N5 |
NBR | 90+/-5 | N6 |
Silikon | 70+/-5 | S7 |
HNBR | 80+/-5 | N8 |
FFKM | 80+/-5 | V9 |
Do you need support in selecting the right seal or do you have any questions? We will be happy to help you directly!