Silicone to Metal Bonding, C&M Rubber, Dayton, OH

Capabilities Custom Elastomer Compounding Custom Molding Custom Tooling Prototyping & Design Review Silicone to Metal Bonding Heater & Sensor Encapsulation Products MS-25171C/A-A-59178A Electrical Terminal Boot Current Price and Delivery Lead Times ResourcesSubmit a Drawing For Quote Technical ISO 9001:2000 Certified

All Categories > Custom Elastomer Compounding > Silicone to Metal Bonding

Download PDF Print

Printable Page Email

Email This Page

Save To Favorites


	Silicone to Metal Bonding

Download PDF

Email This Page

Save To Favorites

larger image

The technique of bonding silicone or other elastomers to a metal surface has blossomed into a significant portion of our manufacturing schedule. Silicone to metal bonding has resulted in some unique and cost saving designs. In fact, in cooperation with a manufacturer of high-speed printing systems, we have developed a re-bonding regiment that has significantly reduced their costs related to re-usable service parts.

For qualified elastomers, C&M Rubber Co. will assist your organization in processing the required documents to apply for UL and /or NSF Certification.

Specifications · Commonly Available Elastomer Materials · General Silicone Characteristics · Quality Assurance

Specifications

Max. Tooling Dimension		24” W x 24”D

Max. Tooling Height		2” to 7” Range

Mold Types		Compression & Transfer

Mold Configuration		Single or multiple cavity

Max. Cavity Count		Part size & target piece price are determining factors

Insert Composition		Insert must withstand clamping pressure during molding process Metal or other thermo-resistant material (400°F)\| Insert must withstand clamping pressure during molding process

Bonding Surface Requirements		Degreasing and /or shot blasting of target bonding areas may be necessary for solid adhesion. Free of oil, grease or lubricants.

Bonding Methods		Physical encapsulation and/or heat activated adhesive bonding.

Bonding Agents		A wide variety of bonding agents are available for a host of application requirements and environmental conditions. Consult with our engineers for best recommendation.

Insert Re-Use & Re-Bonding		With proper rubber removal & surface preparation, some metal substrate components can be recycled for re-bonding.

Elastomer Coating		Silicone is a versatile elastomer that bonds well to metal substrates. It is frequently used in applications requiring UL, NSF or FDA 21CFR177.2600 certification where food contact is common. Other materials such as flourosilicone, urethane, EPDM & natur

Tolerances		See RMA Dimensional Tolerance Table (Technical Data PDF)

Shrink Factor		Variables such as part size, thickness, length, specific application & environment, mold type & elastomer used will influence final shrink percentage used. Consult with our engineers for recommendation.

Commonly Available Elastomer Materials

Silicone		Manufactured by Momentive: SE-6035 -35 Duro – Blending Base SE-6075- 75 Duro – Blending Base SE-6335- 30 Duro – Blending Base – High Strength SE-5559-U- 57 Duro – Flame Retardent – Color Brown Only Tufel® II Platinum Cure – Various Durometer –Commonly used for medical applications. Manufactured by Dow: HS-30 -30 Duro High Strength – Use alone or blended HS-50 -50 Duro High Strength – Use alone or blended HS-70 -70 Duro High Strength – Use alone or blended GP 50 -50 Duro Base- For smooth shiny surface finish NPC 40 -40 Duro – No post cure required NPC 80 -80 Duro – No post cure required Silastic® 160-60 60 Semi conductive silicone – Resist 10Ohm/cm Silastic® LCS 755 55 Duro – Low compression set Manufactured Shin-Etsu: SG-135U Base – 35 Duro – General Purpose Base SG-175U Base – 75 Duro – General Purpose Base

Flourosilicone		Manufactured by Dow: LS-2840 – 40 Duro Flourosilicone LS-2860 – 75 Duro Flourosilicone

Neoprene, NBR, EPDM, Millable Urethane & Nitrile		Manufactured by Valley Rubber: Custom mix to specific customer requirements

Durometer & Color		Durometer & Color can be customized to meet your specification. Durometer can range from 10-90 Duro Shore A. (±5 points) Silicone can be Pantone color matched whereas flourosilicone, urethane, EPDM and natural rubber are typically available in primary,

General Silicone Characteristics

High Temperature Resistance

Silicone elastomers outperform organics with proven temperature resistance up to 600ºF. Even under extreme heat, these compounds provide superior tensile strength, elongation and abrasion resistance.

Low Temperature

Despite extreme temperatures as low as -100ºF, most silicone elastomers retain durometer and modulus. Special grades have brittle points below -150*F and remain serviceable at temperatures as low as -130ºF.

Compression Resistance

Silicone elastomers offer incomparable resistance to compression set deformation, even at temperatures as low as -120°F or as high as 500°F.

Electrical Properties

Silicone elastomers provide unequalled electrical properties over a wide range of temperatures. The rival mica in terms of resistance to high-voltage ionization and corona. Plus, they show far less dielectric fatigue than TFE resins or organic elastomers.

Fire Resistance

Underwriters Laboratory Flame Test (UL94) is the standard measure of a materials resistance to burning. This UL test is performed on a test sample 5" x 1.2". A 3/4" Bunsen flame is applied for 10 seconds to a vertically supported sample immersed 3/4" into the flame. The time for burning to cease following the initial 10 second exposure is noted. The flame is applied again for 10 seconds and the time for burning to cease including glowing is noted. A total of 5 samples are tested in this manner. Five additional samples aged for 7 days at 70*C are also tested in this manner.

UL Flame Test Ratings and Results

Rating	Required Test Results
94 V-0	5 specimens with 10 flame applications, with none exceeding 10 second flame or 50 second total burn.
94 V-1	5 specimens with 10 flame applications, with none exceeding 30 second flame or 250 second total burn.
94 V-2	Same criteria as for 94 V-1, except some dripping is allowed
94 V-HB	3 specimens none of which has either a burn rate exceeding 3 inches per minute or ceases to burn before reaching reference point.

Smoke Generation

Silicone polymers yield low levels of smoke under normal service or fire conditions.

Radiation Resistance

At room temperature, silicone elastomers outperform TFE resin and conventional fluoroelastomers on exposure to 10/8 roentgens.

Quality Assurance

Commitment To Quality		ISO 9001-2000 Certified (Through 11/14/2010) Statistical Process Control Practice Toyota Production System Tenants Kodak Contour Projector ACU-Gage Coordinate Measuring System Electronic Durometer Tester Scott Tensile Tester Rheometer 900 Tester Leitz/Wetzler Microscope Batch Control and Tracking Custom Manufacturing Software Control Bar Code Order Tracking & Invoicing

MORE IMAGES


	· Diaper Guide

	· L1

	· Silicone to Metal 3

	· Silicone To Metal Assortment

	· Silicone To Metal 100

	· Sililcone To Metal 101

	· Silicone To Metal 102

Silicone to Metal Bonding

Max. Tooling Dimension

Max. Tooling Height

Mold Types

Mold Configuration

Max. Cavity Count

Insert Composition

Bonding Surface Requirements

Bonding Methods

Bonding Agents

Insert Re-Use & Re-Bonding

Elastomer Coating

Tolerances

Shrink Factor

Silicone

Flourosilicone

Neoprene, NBR, EPDM, Millable Urethane & Nitrile

Durometer & Color