JDR

Cross-section	Profile designation	Application	Operating pressure < MPa	Temperature °C (depending on material)	Glide speed < m/s	Design information	Product details
	JDR	Hydraulics	15	-100 to 260	4

JDR
The profile JDR serves as a sealing at rotating shafts. It consists of an U-shaped PTFE jacket and a V-shaped corrosion resistant spring. The spring makes the seal permanently elastic, independent of operating temperature changes, pressure, etc. The axial warping in a flange prevents the rotation in the seal and guarantees a heat dissipation. The pre-stressing 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 profile JDR is applied,where traditional seals of elastomer and polyurethanes cannot be used owing to their application parameters (temperature, medium, speed).

ADVANTAGES ARE
- resistant to most fluids and chemicals
- low coefficient of friction
- eligible pressing force of the spring
- available with strengthened inner lip for a longer service life
- no stick-slip effect
- broadly based application scope by a tall variety of materials
- unlimited shelf life

APPLICATION RANGE

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 pharmaceutical processings, food and beverage processings as well as hydraulics. 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 construction is also available for rotating movements against the cylinder. Please contact our consultancy service before using.

MATERIAL

ORDER EXAMPLE
Rod diameter: 50 mm
JDR 0500 PT031 2530 C

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. "C") by the desired one (e.g. "B" or "D").
For special cases of application (high temperatures, speed, specific pressure, use in water, HFA-, HFB-fluids etc.) please get in contact with our consultancy service.