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LORD Corporation

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Chemlok® 250 Adhesive Where to Buy


Product Information

LORD Chemlok® 250 adhesive is a one-coat adhesive used to bond a variety of elastomers to various substrates during vulcanization of the elastomer. It is composed a mixture of polymers, organic compounds and mineral fillers dissolved or dispersed in an organic solvent system. A single coat of Chemlok 250 adhesive will bond compounds based on natural rubber (NR), polyisoprene (IR), styrene-butadiene (SBR), polybutadiene (BR), polychloroprene (CR), nitrile (NBR), butyl (IIR), EPDM and polyepichlorohydrin (ECO) polymers to a variety of metals. These metals include carbon and alloy steels, stainless steel, aluminum, copper and copper alloys, magnesium and zinc, as well as a variety of plastics, composites and fabrics.

Shelf Life

Shelf life is one year from date of shipment when stored in a well ventilated area at 21-27°C (70-80°F) in original, unopened container. Do not store or use near heat, sparks or open flame.

Avoid excessive exposure to high humidity. Keep container tightly closed when not in use. Once opened, fit the 55-gallon drum of adhesive with desiccant tubes.

Features and Benefits

Convenient - requires only a single coat for most applications, reducing labor, solvent usage, inventory and shipping costs.

Versatile - bonds a wide variety of elastomers to metals, plastics and fabrics; suitable for existing production lines; tolerates a wide variety of stock formulations.

Durable - provides rubber tearing bonds; provides superior adhesion to plated metals, lowering scrap rates.

Typical Properties*

Appearance Black Liquid
Viscosity, cps @ 25°C (77°F)
Brookfield LVT
Spindle 2, 30 rpm
200-550
Density, kg/m3 (lb/gal) 1120.0-1160.0 (9.3-9.7)
Solids Content by Weight, % 23.5-27.5
Flash Point, °C (°F)
Pensky-Martens
33 (92)
Solvents Xylene, Trichloroethylene

*Data is typical and not to be used for specification purposes.

Auxiliary Products

Chemlok<sup>®</sup> 2000 Primer

general purpose primer

Features and Benefits

Versatile - can be used as a primer under a wide variety of Chemlok covercoat adhesives such as the Chemlok 220 series, Chemlok 230 series, Chemlok 250 series or Chemlok 6000 series adhesives.

Convenient - suitable for existing production lines; can be applied by using brush, dip, spray or roller coat methods.

Durable - provides rubber tearing bonds and excellent environmental resistance when used in combination with Chemlok covercoat adhesives.

Identifiable Appearance - provides a brilliant blue color for easy identification when used over phosphatized substrates.

Chemlok<sup>®</sup> 205 Adhesive and/or Primer

general purpose primer

Features and Benefits

Versatile – can be used as a primer under a wide variety of Chemlok covercoat adhesives such as the Chemlok 220 series, Chemlok 230 series, Chemlok 250 series or Chemlok 6000 series adhesives.

Convenient – can be used as a one-coat adhesive to bond some nitrile rubber compounds to rigid substrates during vulcanization.

Easy to Apply – applies easily by brush, dip, spray or roll coat methods; suitable for existing production lines.

Durable – provides rubber tearing bonds and excellent environmental resistance when used in combination with Chemlok covercoat adhesives.

Chemlok<sup>®</sup> 205A Primer

general purpose primer

Features and Benefits

Versatile – can be used as a primer under a wide variety of Chemlok covercoat adhesives such as the Chemlok 220 series, Chemlok 230 series or Chemlok 250 series adhesives.

Environmentally Friendly – dilutable with aromatic solvents, reducing the number of solvents in plant inventory.

Easy to Apply – applies easily by brush, dip, spray or roller coat methods; suitable for existing production lines.

Durable – provides rubber tearing bonds and outstanding environmental resistance when used in combination with Chemlok covercoat adhesives.

Convenient – requires only a single coat application to bond some nitrile rubber compounds to rigid substrates during vulcanization.

Chemlok<sup>®</sup> 205LH Primer

low HAP general purpose primer

Features and Benefits

Versatile - can be used as a primer under a variety of Chemlok covercoat adhesives such as the Chemlok 6125 series or Chemlok 6254 series adhesives.

Easy to Apply - applies easily by brush, dip, spray or roll coat methods; suitable for existing production lines.

Durable - provides rubber tearing bonds and excellent environmental resistance when used in combination with Chemlok covercoat adhesives.

Identifiable Appearance - provides a brilliant blue color for easy identification when used over phosphatized substrates.

Environmentally Friendly - contains low HAP content (3.6 lb HAP/gal solid or 6.45% HAP content).

LORD<sup>®</sup> LokRelease™ 100 Mold Release

fast curing release agent designed for use with molded elastomers

Features and Benefits

Process Enhancer – provides quick, easy part release from molds; single application allows multiple molding cycles; improves molding efficiency in many processes including injection, compression and transfer molding.

Improved Appearance – reduces defects caused by sticking; nontransferable to elastomer compound; does not interfere with compound chemistry.

Environmentally Recommended – contains no Class I or Class II ozone depleting substances; contains no 1,1,1 trichloroethane or methylene chloride.

LORD<sup>®</sup> LokRelease™ 100EZ Mold Release

fast curing, nontransferable release agent

Features and Benefits

Process Enhancer – provides quick, easy part release from molds; single application allows multiple molding cycles; improves molding efficiency in many processes including injection, compression and transfer molding.

Improved Appearance – reduces defects caused by sticking; nontransferable to elastomer compound; does not interfere with compound chemistry.

Environmentally Recommended – contains no Class I or Class II ozone depleting substances; contains no chlorofluorocarbon (CFC) or hydrochlorofluorocarbon (HCFC) propellants; contains no 1,1,1 trichloroethane or methylene chloride.

LORD<sup>®</sup> LokRelease™ 200 Aqueous Mold Release

aqueous mold release is designed for use with molded elastomers

Features and Benefits

Process Enhancer – provides quick, easy part release; produces low build-up, allowing more production time between mold cleanings; improves molding efficiency in many processes including injection, compression and transfer molding.

Improved Appearance – reduces defects caused by sticking; nontransferable, eliminating post-finishing problems.

Environmentally Recommended – water-based coating is engineered to prevent rust and corrosion in steel molds.

LORD<sup>®</sup> LokRelease™ 300 Silicone-Free Mold Release

silicone-free, nontransferable release agent

Features and Benefits

Process Enhancer – provides quick, easy part release; produces low build-up, allowing more production time between mold cleanings; improves mold efficiency in many processes including injection, compression and transfer molding of most rubber compounds including silicone.

Improved Appearance – reduces defects caused by sticking; nontransferable, eliminating post-finishing problems.

Environmentally Recommended – water-based coating is engineered to prevent rust and corrosion in steel molds.

Literature

Download Type Name
Download MSDS (US)Safety Data Sheet Chemlok 250
Download Technical Data Sheet Chemlok 250 Adhesive