Category: RCM Sheets for Anti-Squeal Shims
Product Style Number & Name:
RCM sheet NCN4640
Rubber coated metal coil sheet
Rubber coated metal sheet (RCM sheet) is made from metal substrate coated with thin NBR rubber or other rubber layers through advanced processing technology.
A continuous length RCM coil sheet is made from an entire coil of metal sheet through a series of treatments and rubber coating process automatically and continuously in our special production line.

Properties & Applications:
The RCM sheet has good sealing performance, good anti-squeal performance, excellent chemical resistance and anti-aging properties, and good machinability.
It is widely used as gasket material for engines, compressors, refrigerating machines, and as anti-squeal shim material for braking system.
RCM Sheets for Anti-Squeal Shims
RCM sheet is a good anti-squeal shim material for braking system. After machined and punched to desired shapes, the anti-squeal shims can be affixed to the steel backing plate directly.
Our various styles of double-sided and single-sided rubber coated metal sheets can meet different application requirements from various customers.
A typical sheet type for this application is one side coated with rubber, and the other side coated with antirust layer and then attached with a pressure-sensitive adhesive layer.
Typical Styles:
|
Style |
Overall thickness |
Metal substrate |
Rubber coating |
||
|
Material |
Thickness |
Material |
Thickness |
||
|
NCN4640 |
0.46mm |
SPCC-1 |
0.40mm |
NBR |
0.03mm per side |
|
NC4640 |
0.46mm |
SPCC-1 |
0.40mm |
NBR |
0.06mm one side |
|
NCN4640A |
0.46mm +Adhesive |
SPCC-1 |
0.40mm |
NBR |
0.03mm per side |
|
NC4640A |
0.46mm +Adhesive |
SPCC-1 |
0.40mm |
NBR |
0.06mm one side |
Other materials and thicknesses are also available on request.
RCM sheet NCN4640
Metal substrate (SPCC-1) thickness: 0.40mm.
NBR rubber coating thickness (each side): 0.03mm.
Overall thickness: 0.46±0.04mm.
Maximum width: 800mm (net width: approx. 785mm).
|
Item |
Testing condition |
Result |
|
Metal substrate |
Vickers hardness tester |
≥200HV |
|
Appearance |
Visual inspection |
Smooth surface, no impurities, no blistering |
|
Pencil hardness |
Pencil hardness tester |
Above 2H |
|
Coating adhesion |
Adhesion test by scratch |
Above grade 2 |
|
Peel strength |
Peel force tester |
>4.9Mpa |
|
Impact test |
205°C, 60s |
No cracking, no shedding |
|
Bending test |
Scratching 180-degree arc surface with a knife |
No cracking |
|
High temperature test |
300°C, 20min |
No cracking |
|
Resistance to salt spray |
240h |
No bubbles, no shedding |
|
Resistance to #901 oil |
150°C, 5h |
Weight increase ≤2% |
|
Thickness increase ≤2% |
|
Style |
Overall thickness |
Metal substrate |
Rubber coating |
||
|
Material |
Thickness |
Material |
Thickness |
||
|
NCN4640 |
0.46mm |
SPCC-1 |
0.40mm |
NBR |
0.03mm per side |
|
NC4640 |
0.46mm |
SPCC-1 |
0.40mm |
NBR |
0.06mm one side |
|
NCN4640A |
0.46mm +Adhesive |
SPCC-1 |
0.40mm |
NBR |
0.03mm per side |
|
NC4640A |
0.46mm +Adhesive |
SPCC-1 |
0.40mm |
NBR |
0.06mm one side |
Other materials and thicknesses are also available on request.
RCM sheet NCN4640
Metal substrate (SPCC-1) thickness: 0.40mm.
NBR rubber coating thickness (each side): 0.03mm.
Overall thickness: 0.46±0.04mm.
Maximum width: 800mm (net width: approx. 785mm).