SC 2000 Cold Vulcanizing Cement
SC 2000 Cement is the result of our successful development of a universal cold vulcanizing cement. Heretofore, two different types of cement were needed to splice belts having different fabric carcasses and different rubber compounds; one cement for fabric and a different cement for rubber to rubber. With SC 2000 Cement + UTR-20 Hardener, belts of rubber, nylon, neoprene, nitrile, with any combination of polyester, rayon, nylon or dacron fabric can be spliced. SC 2000 + UTR-20 will bond the fabric to fabric and also the various rubber compounds to each other. Result, one cement for rubber to rubber, rubber to fabric and fabric to fabric - and rubber to metal and fabric to metal! SC 2000 + UTR-20 can also be used for belt repair with our new CN bonding layer patching material.
Method of Application
For Belt Splicing: After buffing lapped surfaces, apply a coat of SC 2000 + UTR-20 mixture to the lapped areas with a stiff bristle brush. Allow to dry 30-40 minutes (maybe longer in our Florida humidity).
The second coat is then applied and allowed to dry until it is very slightly tacky. Both laps are then placed together and stitched down vigorously. SC 2000 is excellent for heavy duty belting.
For Bonding Rubber to Rubber: If rubber does not have CN bonding layer the rubber must be buffed before application of cement. No solvent is to be used on rubber after buffing, ever. First, a coat of SC 2000 + UTR-20 mixture is brushed on both surfaces and permitted to dry until slightly tacky. Place cemented sheets together and stitch down vigorously. When bonding rubber that has a CN bonding layer to rubber that does not have a bonding layer, only the rubber without bonding layer must be buffed. Apply two coats of cement on the buffed rubber and one coat on the rubber with bonding layer.
At Tampa Rubber & Gasket, we stock SC 2000 in quarts and gallons. The quarts include a 40 gram bottle of UTR-20 hardener, and gallons come with four bottles.
C 320 Cold Vulcanizing Cement
Providing all the advantages and strength of
our SC2000 cement, C320
cold vulcanizing cement conforms to FDA
standards for use in food grade
applications. Developed for use in splicing
light and heavy industrial belting, C320 is
used for splicing fabric and rubber belts.
The non-flammable and versatile C320, used with UTR-20
Hardener, will bond a wide range of elastomers commonly used in
the food processing industry and in other areas where food grade
adhesive material is specified. For example, C320 is used for
bonding cleats to belting and pulley lagging to metal!
FUSION ECRF COLD BONDING CEMENT
|FUSION ECRF contact adhesive offers many advantages for quick and environment friendly cold bonding.|
- Free of chlorinated hydrocarbons.
- High initial and permanent adhesion
- Only small amounts are needed
- Easy to process
- Higher threshold limit values than
for chlorinated hydrocarbons.
|FUSION ECRF cement is a two-component adhesive based on polychloroprene rubber in a solvent base that, when catalyzed with the appropriate amount of RE Hardener, yields high strength adhesions. FUSION ECRF is ideal for use in lining and lagging installations, when bonding rubber to steel, rubber to fabric, rubber to rubber, rubber to concrete, fiberglass, and urethane. FUSION ECRF is ideal for splicing conveyor belting, the repair of steel cable belting, and for repairs to existing rubber lined vessels and rubber components.|
|THE FUSION ECRF cement kit is comprised of cement and hardener in the ratio of 0.8 liter (1 Qt.) of cement to 40 gm. (2 Oz.) of hardener. These two components must be thoroughly mixed (stirred). The mixed portion should be used within 2.5 hours at 70 degrees Fahrenheit.|
Surface Preparation & Application Methods
Rubber to Steel
|All surfaces must be clean, dry and free of oil, paint, and other contamination. Steel and other metallic surfaces should be sandblasted to a 4 mil profile (SSPCV-SP-5-63 "White Metal Blast Cleaning") to obtain maximum adhesion. After sandblasting the metal surfaces should be cleaned with FUSION-CLEAN solvent. The metal surface should then have FUSION METAL PRIMER applied. Take special care to insure all directions on the container are followed. Before proceeding with the bonding procedures allow the metal primer to dry completely (at least 15 minutes). Apply the FUSION ECRF cement to the primed surface. Take special care to insure all directions on the container are followed. For ease of application the FUSION ECRF cement can be roller applied. On some high profile metal surfaces a roller will not work. A brush application will help insure that the entire metal surface is covered by FUSION METAL PRIMER and FUSION ECRF.|
|The surface should be prepared by sanding and then cleaned with FUSION-CLEAN solvent to help remove abraded particles. Allow the solvent to flash or evaporate. The prepared surface must be primed with FUSION ECRF cement. The prime coat of cement should be allowed to dry at least 1 hour (overnight is ideal). After allowing the prime coat to dry, proceed with the bonding procedures.|
Rubber to Rubber
|The surface should be cleaned with FUSION-CLEAN solvent to remove all contamination and mold releases. Rubber that does not have the special FUSION bonding layer, requires buffing to a textured finish. The rubber dust should be removed with a dry brush before the prime coat of FUSION ECRF is applied to the prepared surface. The applicator should use a scrubbing-like motion when applying the first coat of FUSION ECRF cement. The scrubbing motion helps to insure that all voids on the buffed surface to be bonded are filled in. Allow the prime coat to dry for 1 hour and then proceed with the bonding procedures.|
|The best surface preparation for concrete is sandblasting to provide a clean, dry and sound substrate. When sandblasting is not practical, the surface may be acid etched following the manufacturer's recommendations. After sandblasting or etching, the surface must be primed with FUSION ECRF cement. For ease of application the prime coat could be roller applied by diluting the FUSION ECRF cement with FUSION-CLEAN solvent, about 50%. This dilution will assure better absorption. The second coat of FUSION ECRF cement must not be diluted for optimum adhesion.|
Fabric to Fabric
|Fabric that is R.F.L. treated should be clean and dry. The number of coats of FUSION ECRF cement will depend on the weight and weave of the fabric. Take special care to insure all indentations are filled (such as heavy conveyor belt fabric). Under no conditions should the fabric be buffed (sanded) as this will remove the R.F.L. coating and greatly reduce the strength of the fabric.|
|When applying the first coat of FUSION ECRF cement a scrubbing motion is preferred so that all voids on the surface to be bonded are filled in. The first coat of cement should be allowed to dry at least 1 hour. Maximum drying time for the first coat should not exceed 48 hours. The second coat of FUSION ECRF should not be scrubbed because the solvent in the cement will attack and lift the first coat. This is more evident when the first coat has a shorter drying time.|
- To the properly primed metal surfaces apply one coat of FUSION ECRF and allow to dry for a minimum of 30 minutes at room temperature. Apply a second coat of FUSION ECRF cement to the metal surface and one coat to the bonding layer side of the sheet rubber and allow to dry a minimum of 10 minutes (bonding time will be up to 30 minutes). When applying the cement care should be taken to apply a uniform coat avoiding puddles and uneven coating. SURFACES MUST NOT BE TACKY WHEN BONDED. Note: If sheet rubber with no bonding layer is used, a prime coat of FUSION ECRF cement is to be applied and let dry for a minimum of 30 minutes at room temperature. Then apply the second coat as per the above instructions.
- Join the rubber sheet and metal surface (or rubber to rubber) and apply pressure using a hand stitcher and / or rubber mallet, starting at the center and working outwards. On conveyor belt splices a FUSION DOUBLE ACTING ROLLER MUST be applied.
|FUSION ECRF is capable of bonding rubber to steel in the range of 80-140 lbs. peel per inch width. Bond strengths of fabric to fabric, such as fabric conveyor belting develops over 500-700 lbs. in shear. Optimum adhesion is obtained after 24 hours.|
|Typical Peel Strength|
|Rubber to Steel||100 lbs. +|
|Rubber to Rubber||80 lbs. +|
|Fabric to Fabric||90 lbs. +|
|The gel time or working life of the mixture is approximately 2.5 hours at 70 degrees Fahrenheit.|
|Approximately 42 square feet per 800 ml. (Quart Tin)|
|Weight per Liter||.88 kg.|
|Solvents||Mixture of Cyclohexane & Ethyl Acetate|
|Solid Matter||Chloroprene Rubber Compound|
|Working Temp.||-10ºF to 200ºF|
|Threshold Limit Value||Min. 300 PPM|
|Shelf life of unopened containers is 18 months at room temperature. FUSION ECRF cement and hardener should be stored in a cool dark place away from heat, sparks and flame under 70ºF. If the cement or hardener sees temperatures lower than minus 10ºF. the Chloroprene rubber compound and isocyanates will crystallize. If the FUSION ECRF cement and hardener is not warmed up in cold temperatures before using, it will reduce the bond strength.|
|FUSION ECRF contains solvents. The inhalation of excessive amounts of vapor may induce an allergic respiratory reaction to sensitized individuals. Avoid skin contact, wear protective clothing, impervious rubber gloves, and safety glasses. In case of skin contact, wash well with soap and water. Spills should be absorbed with absorbent material and water added to destroy isocyanates. When applying FUSION ECRF in confined areas, suction ventilation equipment should be in operation. The equipment should be arranged so that vapors are drawn down and away from the applicator. FUSION ECRF cement is flammable. All fire safety measures should be observed. Keep awahy from heat, sparks, and open flame. Always ground container when pouring flammable materials to avoid static discharge (sparking) which could ignite solvents. Do not allow free fall of more than a few inches when pouring, as dangerous static charges could be generated. Do not use until the MATERIAL SAFETY DATA SHEET and INSTRUCTIONS have been read and understood.|
M 100 Contact Adhesive
M 100 Contact Adhesive is a Tampa Rubber & Gasket Co. exclusive! It is a rubber-based, yellow contact adhesive for gluing rubber to rubber. The application instructions are similar to SC 2000, except in most cases, one coat will suffice.
M 100 is available in quarts or gallons.
Tampa Rubber & Gasket Co., Inc.
215 North 20th Street
Tampa, FL, USA 33605
E-Mail - The Post Office
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