D-Ring

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VALQUA No.
2060-D(NBR)
Product name
Custom-Made Synthetic Rubber Molded Product (For Pistons)
Shape
D-RING(P)
D-RING(P)
Features1
Product shape derived from an O-ring
Features2
Rolling resistance, rotatable
Features3
High sliding resistance, versatile
Inventory status
Products that are made based on the orders received

Standard size
　
Type
Squeeze

Application classification
For pistons
Pressure classification
None
Standard material

none

Non-standard quality of material (adaptable material)
Usage location Material name Material No.
Main part NBR B0780

Sealing direction
Flat surface Cylinder Cylindrical piston Cylindrical rod
- - ○ ○
Size
Not specified
Based on JIS sizes P series

■ Product content and main applications

Product content
A synthetic rubber material is molded into a ring shape with a U, J and L-shaped cross section. Rubber compounding that is appropriate for the service temperature and the fluid type are available.
Main applications
It is used as a seal for various types of hydraulic machinery such as cylinders, presses, jacks and electromagnetic valves.

■ Service temperature range

Rubber material Service temperature range
NBR -20℃ ～ 80℃
Click here for the list of rubber materials

■ Operating pressure, pressure direction and pressure types

Pressure Pressure (with back-up ring) Pressure direction
Based on the extrusion curve General indicator: MAX 11.8MPa (In real terms, it is the same level as an O-ring.) Spiral: 34.3MPa Bi-directional
One-cut, endless: 49MPa

Pressure types
shock, surge, pulse, vacuum		 They can all be accommodated

■ Motions and strokes applied

For fixing -
Reciprocating ○
Rotating ○
Helical ○
Opening and shutting ○
Sliding ○
Oscillating -
Stroking
Stroking is not specified; however, a short stroke could cause a lack of lubrication.

■ Fluid, speed and PV value

Liquid ○
Gas ○
Fine particle ×
General dust -
Oil film -
Speed
Linear: 0.04 to 1.0m/sec Rotation: 0.5m/sec
PV Value
-

■ Lubrication, mountability, sliding resistance, compression resistance, eccentricity/inclination, conformance

Lubrication
Needed
Mountability
Excellent
Sliding resistance
and compression resistance
High
Eccentricity/inclination
and conformance
Low to mid level


■ Cross-section dimensions and design precautions

・Cross-section dimensions

1.9Ｗ


Based on an O-ring

・Design precautions

Versatile, but high sliding resistance.

■ Case examples of defects and countermeasures

■ FAQ

‣FAQ about high performance elastomer is here
 ‣FAQ about the elastomer is here

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