LORD Rubber Grommet Isolator W/ Plain Ferrule

Part # J-3112-12-1

LORD Grommet Isolators provide effective, economical vibration isolation for light loads. They are suitable for commercial and military applications including computers, disk drives, business machines, precision instrumentation and general industrial equipment.

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Max Axial Load 1 lbs. / 4 N
Axial Spring Rate 22 lbs./in. / 3.9 N/mm
Radial Spring Rate 44 lbs./in. / 7.7 N/mm 
Thread Size # 8 Screw
Elastomer NR = Natural Rubber
Note No. 2 N/A
Part No. J-3112-12-1 | J3112121
Manufacturer LORD Corporation
Part Category

Vibration Control

Part Section Grommet Isolators
Part Type Grommet Islolator  W/ Threaded Ferrule
Part Status
Call +1 800 657-0747 or use the
webform to the right on this page
Part Alternative
Call +1 800 657-0747  or use the
webform to the right on this page


Catalog Page No.
Catalog Section Page No.
Rubber Parts Catalog Grommet Isolators Page 3
LORD PC7000 Grommet Isolators Page --
LORD PC-2201m Grommet Isolators Page 78



Dimensions Technical Drawing
Dimension Measurement Note  
Figure 3  
Spacer Length -- in. / -- mm 1
Spacer O.D. -- in. / -- mm 1
Support Member Plate Thickness 0.062 in. / 1.6 mm 3
Support Member Plate Diameter 0.555 in. / 14.1 mm 3
Thread Size # 8 Screw  
Ferrule Part No. Y-10879-B  
Elastomer NR = Natural Rubber  

NOTES: Red figures are metric reference.

1 - Spacer recommended for positive tightening if ferrule is not used. Not supplied.

2 - Not Recommended for Radial Static Load

3 - Tolerance is +/- 0.005 (.127mm)

***Notes only apply if called out in table***




Grommet Isolators are made of Oil Resistant neoprene and natural rubber.


Spacer recommended for positive tightening if ferrule is not used. Not supplied.

Radial Static Loads

Some Grommet Isolators are Not Recommended for Radial Static Load. Please see Specs and/or Dimensions Tab.


Tolerance is +/- 0.005 (.127mm)

Custom Designs

Customized designs and special elastomer compounds for specific problems are available. These may result in spring rates and dimensions other than shown.

A part’s listing on this website does not guarantee its availability.




Custom Parts

Our custom molding department can make a part just for your application.


Would you like some assistance in selecting the right mount for your application?  Our engineering department can help.  Please call or use the webform below.  We will be glad to assist.

Not what you are looking for?

Our knowledgeable staff can assist you with whatever you need.  From Special Packaging, Overnight shipments to applications engineering. DeltaFlex is ready to help find a solution.

Engineering Assistance

"Frequently vibration isolation problems require a system engineering analysis..." - Put us to work for you.

DeltaFlex has the computer capability, as well as specialized programs, for analyzing engine/transmission combinations. The output from these analyses is a mounting proposal which optimizes performance over the complete range of operating speeds. This service is available to you upon request. If you require this type of engineering assistance please call 800.657.0747 we will be glad to assist you.

What is the impact of Vibration Control?

The biggest impact that vibration isolation can have, is with the end users of our customers products, more importantly their perception of the quality of those products.

Values states herein represent typical values as not all test are run on each lot produced. For formalized product specifications or specific product end uses, contact Customer Service 262.632.2345.

A part’s listing on this website does not guarantee its availability.