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JRR
The profile JRR is an radial operating sealing, that is most suitable for static applications. It consists of an U-shaped PTFE jacket and a V-shaped corrosion resistant spring. The double-mounted spring ensures a high security of the functionality. This makes the seal permanently elastic, independent of operating temperature changes, pressure, etc. The prestressing of the PTFE ring and the mechanic pretension power of the spring creates the static seal effect. The consequent pressing force gets strengthened by the system pressure, so that the total seal pressing grows by increasing working pressure. The JRR sealing replaces in many cases the conventional O-ring-back-up-ring-combination.
ADVANTAGES ARE
- resistant to most fluids and chemicals
- high seal pressing
- high and prolonged recovery
- easy installation in splitted grooves
- broadly based application scope by a tall variety of materials
- excellent resistance to ageing
- unlimited shelf life
APPLICATION RANGE
Working pressure: | 35 Mpa (350 bar) |
Working temperature: | - 150°C up to + 260°C |
Static use
A large application scope is given by the variety of combinations of the sealing and spring materials (for example the possible sterilization). It can be applied in apparatus engineering and plant constructions, pharmaceutical processings, cryogenics, food and beverage processings, nuclear energy technologies, aeronautics, vacuum processings as well as natural gas and mineral oil machineries. This construction is also available for static sealings at the external diameter. Please contact our consultancy service before using. This data represents the maximum limit of strength and is closely interrelated. Under difficult conditions it is not advisable to make use of all values simultancously at maximum limit. This data represents the maximum limit of strength and is closely interrelated. Under difficult conditions it is not advisable to make use of all values simultancously at maximum limit.
MATERIAL
Joint washer: | PT031 |
Spring: | Stainless steel 1.4301 (AISI 301) |
ORDER EXAMPLE
Rod diameter: 50 mm
JRR 0500 PT031 2730 D
JRR = | Profile |
0500 = | Rod diameter Ø x 10 |
PTO31 = | Compound |
2730 = | Serial number, Last two Digits: spring-Code |
D = | Cross-section |
MOUNTING INSTRUCTIONS
For special applications it is recommendable to use a sealing cross section, reduced or stepped up, that differs from standard. In these cases replace the standard cross section code (e.g. "D") by the desired one (e.g. "B" or "C"). To be used with splitted grooves.
For special cases of application (high temperatures, speed, specific pressure, use in water, HFA-, HFB-fluids etc.) please contact our consultancy Service.
Series no. | Cross-section | O-Ring | Recommended | Groove width | Groove depth | Gap max. | Radius max. | |
Cross-section | Inner range | |||||||
d (mm) | ||||||||
(mm) | ≥ | < | L (mm) | G (mm) | e (mm) | R (mm) | ||
* | ||||||||
2700 | A | 1,78 | 4 | 10 | 2,4 | 1,45 | 0,13 | 0,4 |
2710 | B | 2,62 | 10 | 20 | 3,6 | 2,25 | 0,13 | 0,4 |
2720 | C | 3,53 | 20 | 40 | 4,8 | 3,1 | 0,15 | 0,6 |
2730 | D | 5,33 | 40 | 120 | 7,1 | 4,7 | 0,17 | 0,8 |
2740 | E | 6,99 | 120 | 700 | 9,5 | 6,1 | 0,25 | 0,8 |
** | ||||||||
2900 | A | 1,78 | 4 | 10 | 3,8 | 1,45 | 0,13 | 0,4 |
2910 | B | 2,62 | 10 | 20 | 4,65 | 2,25 | 0,13 | 0,4 |
2920 | C | 3,53 | 20 | 40 | 5,7 | 3,1 | 0,15 | 0,6 |
2930 | D | 5,33 | 40 | 120 | 8,5 | 4,7 | 0,17 | 0,8 |
2940 | E | 6,99 | 120 | 700 | 11,2 | 6,1 | 0,25 | 0,8 |
* Housing dimensions for O-Ring grooves without back-up ring
** Housing dimensions for O-Ring grooves with 1 back-up ring
Do you need support in selecting the right seal or do you have any questions? We will be happy to help you directly!