BOSS® TECHNICAL DATA SHEET

TYPICAL PROPERTIESUncuredColors ................................. clear, white, black, aluminum,

bronze and almondSlump ............................................................................ NILTack-Free Time at 77°F (25°C) and 50% RH ..... 10-20 min.

Cured – Physical7 Days at 77°F (25°C) and 50% RH (1/8” thickness)

Elongation ..................................................................... 425Durometer, Shore A ......................................................... 20Tensile Strength ....................................................... 330 psiMovement Capacity .................................................. ±25%Extrusion Rate .................................................. 425 gr/min.VOC .............................................................. 29 grams/liter*Information on this data sheet is subject to change without notice and should not be

used for writing specifications.For additional information on specific applications, contact Accumetric, LLC

DESCRIPTIONBOSS® 310 RTV Industrial Silicone Sealant is a one-part acetoxycure adhesive sealant that is suitable for general industrial sealingand adhesive applications. This product will adhere to clean metal,glass, many types of wood, silicone resins, vulcanized siliconerubber, ceramics and plastic surfaces. A primer may be requiredfor optimum adhesion to some surfaces.

BOSS® 310 RTV Industrial Silicone Sealant has good resistanceto weathering, vibration, moisture, ozone and extremetemperatures. It may be applied in sub-zero weather without lossof extrusion or physical property characteristics. Fully curedBOSS® 310 can be used for extended periods at temperaturesup to 400°F (204°C), and for shorter periods as high as 450°F(232°C).

BOSS® 310 is available in a variety of colors including clear, white,black, aluminum, bronze and almond.

BOSS® 310 RTV Industrial Silicone Sealant

USES• Seal heating, ventilating or air conditioning duct work• Sealing cracks or gaps around windows, vents, ducts, fixtures

and lights• Seal leaks in gutters, downspouts, ducts and piping• Seal cracks in interior walls and ceilings, door joints and

fixtures• Seal out water from compartments in machinery or

appliances• Seal around freezer doors and windows to prevent frost and

condensation from forming• Seal electrical connections and boxes to waterproof• Seal joints and cracks in the roofs and sides of truck trailers• Seal stainless steel food service equipment• Seal electrical controls, instruments, motors, fans and

machinery to keep out dust, dirt and moisture• Make quick sheet metal patches• Seal wall-floor and wall-ceiling seams• Seal windows in oven doors and flues on gas appliances,

flanged pipe joints and access doors• Adhering auto and appliance trim, including metal, fabric and

fabric-backed plastics• Sealing trailers, truck cabs• Filleting and caulking joints in sheet metal stacks, ductwork

and equipment housings• Bonding gaskets in heating and refrigeration units• Sealing marine cabins and windows• Antiabrasion coating• Bonding signs and sign letters• Attaching screwless brackets or nameplates and tacking

plastic materials to metal• Formed-in-place gasket for gear boxes, compressors and

pumps

Curbell Plastics is a proud supplier of Boss® materials1.888.CURBELL • www.curbellplastics.com

BOSS is a registered trademark of Accumetric, LLC

SealingUsing BOSS® 310 RTV Industrial SiliconeSealant in sealing applications followsapproximately the same step-by-stepprocedures as outlined for bondingapplications. After preparing the surfaceand priming where required, the sealant isapplied by forcing it in the joint or seam toobtain full contact between sealant andsurfaces.

SPECIFICATIONSBOSS® 310 meets performance require-ments for the following: Federal Speci-fications TT-S-001543A, TT-S-00230C andASTM C920-95.

CAUTIONDIRECT CONTACT OF UNCURED SEALANTIRRITATES EYES AND MAY IRRITATESKIN. OVEREXPOSURE TO VAPOR MAYIRRITATE EYES, NOSE, AND THROAT.Avoid eye and skin contact. Use withadequate ventilation. Do not handle contactlenses with sealant on hands. IN CASE OFEYE CONTACT, flush eyes with water for15 minutes. Obtain medical attention. INCASE OF SKIN CONTACT, remove fromskin and flush with water. Sealant releasesacetic acid (vinegar-like odor) during cure.KEEP OUT OF THE REACH OF CHILDREN.

PACKAGINGBOSS® 310 RTV Industrial SiliconeSealant is available in 3 oz. aluminumtubes, standard caulking cartridges and 4.5gallon pails. Other sizes available uponrequest.

STORAGE AND SHELF LIFEWhen stored in the original unopenedcontainers at or below 90°F (32°C),BOSS® 310 RTV Industrial SiliconeSealant has a shelf life of 12 months fromdate of shipment. In Countries where highheat and humidity are a factor, specialprecautions must be taken. Store productin a covered, well-ventilated warehouseand avoid excessive heat conditions.Storage in high heat, high humidityconditions may reduce shelf life by up to30%. Rotation of stock is an absolutenecessity. Cartons should always bestacked upright with the nozzle tip pointedupwards. DO NOT stack cartons on theirside. NEVER stack cartons more than 8high. DO NOT store within 1 meter (4 feet)of roofline of the warehouse or storagebuilding.

SHIPPING LIMITATIONSNone.

USERS PLEASE READThe information and data contained hereinis believed to be accurate and reliable;however, it is the user’s responsibility todetermine suitability of use. Since thesupplier cannot know all the uses, or theconditions of use to which these productsmay be exposed, no warranties concerningthe fitness or suitability for a particular useor purpose are made.

It is the user’s responsibility to thoroughlytest any proposed use of our products andindependently conclude satisfactoryperformance in the application.

Likewise, if the application, productspecifications or manner in which ourproducts are used requires governmentapproval or clearance, it is the soleresponsibility of the user to obtain sureauthorization.

The supplier warrants only that its productswill meet its specifications. There is nowarranty of merchantability or fitness foruse, nor any other express or impliedwarranty. The users exclusive remedy andthe suppliers sole liability is limited to refundof the purchase price or replacement of anyproduct shown to be otherwise than aswarranted. The supplier will not be liablefor incidental or consequential damages ofany kind.

Suggestions of uses should not be takenas inducements to infringe any patents.

HOW TO USEApplying the Material: Tack-Free TimeBOSS® 310 RTV Industrial SiliconeSealant is supplied ready-to-use. Underpressure it flows readily from its container.The paste-like consistency makes it easyto work; a spatula or wooden paddle canbe used for tooling the surface.

The cure progresses inward from thesurface. At conditions of at least 77°F (25°C)and 50% relative humidity, the sealant formsa tack-free skin within 20 minutes. Toolingis not practical after this skin begins formingand should be completed within 5 to 10minutes of application, even though thismay require alternate periods of applyingand tooling. Likewise, if masking tape hasbeen used to mark off the area, it shouldbe removed before the tack-free skin forms.

Cure TimeCure time is affected by relative humidity,degree of confinement and cross-sectionalthickness of the sealant. Sections up to 1/8”thick become rubbery solids in about 24hours at room temperature and 20 percentrelative humidity. Less moisture contentreduces it slightly.

In applications where BOSS® 310 may bepartly or totally confined during cure, thetime required for proper cure is generallylengthened by the degree of confinement.Metal-to-metal bonds should not overlapmore than one inch. Every applicationinvolving confinement during cure should bethoroughly tested before commercialization.

The odor given off during cure is due tothe liberation of acetic acid. This odordisappears as the cure progresses, and isnot detectable after the cure is complete.

Bonding1. Thoroughly clean and degrease metal

and plastic surfaces, then rinse allsurfaces, except plastic, with acetone.Rubber surfaces should be roughenedwith sandpaper, then wiped with acetone.Follow the precautions given on solventcontainer label.

2. For stronger, more uniform bonds, applya thin film of A-120 prime coat to allsurfaces except rubber and siliconerubber. Allow to air-dry for 30 to 45minutes at room temperature. (Fullinstructions are provided with the primecoat.)

CAUTION: A-120 prime coat is flammableand has no FDA status. Keep away fromheat and open flames. Use only withadequate ventilation.

031008PI310

MADE IN U.S.A.

BOSS® PRODUCTSAccumetric, LLC Accumetric Asia Pacific, LTD350 Ring Road 18 Kitpanit Bldg. 5th FloorElizabethtown, #502 Patpong RoadKentucky 42701 USA Suriyawong, Bangrak800-928-BOSS(2677) Bangkok, 10500 ThailandTEL (270)769-3385 TEL (662)634-3060FAX (270)765-2412 FAX (662)634-3066Outside U.S.TEL +1(270)769-3385FAX +1(270)765-2412

www.bossproducts.com

Curbell Plastics is a proud supplier of Boss® materials

Nationwide1.888.CURBELLwww.curbellplastics.com