Elastomers and Rubber Materials Specifications

Material System


	Chemical / Polymer System Type
	Your choices are...
	Acrylic / Polyacrylate		Acrylic polymers are formed by polymerizing acrylic acids through a reaction with a suitable catalyst. Acrylics are known for excellent environmental resistance and fast-setting times compared to other resin systems.
	Butyl (Polyisobutylene / Polybutene)		Elastomeric materials are based upon or use a butyl, polybutene or polyisobutylene chemical system. Chlorinated isobutylene or chlorobutyl can be used alone or in blends with other polymers to achieve special properties. Butyl is a common term used for the isobutylene isoprene elastomer. It is known for its resistance to water, steam, alkalis, and oxygenated solvents. Butyl has low gas permeation and is capable of providing high-energy absorption (dampening) and good hot tear strength. The suggested operating temperature is -75° to 250° F.
	Ethylene Copolymer		Ethylene copolymers include (poly)ethylene acrylate acid (EAA), (poly)ethylene methyl acrylate (EMAC), (poly)ethylene ethyl acrylate (EEA), (poly)ethylene vinyl acetate (EVA), (poly)ethylene butyl acrylate (EBAC), (poly)ethylene vinyl acetate (EVA or EVAC), (poly)ethylene vinyl alcohol (EVAL or EVOH), and (poly)ethylene propylene terpolymer (EPM).
	Fluoroelastomer		Polymers are based on fluoropolymer chemical systems such as polytetrafluoroethylene (PTFE) or polyvinylidene fluoride (PVDF). Fluoropolymers are used in applications requiring superior chemical resistance. PTFE is used in applications requiring superior chemical resistance or low friction.
	Isoprene / Polyisoprene		Natural rubber is based on the polyisoprene or isoprene chemical system. Synthetic or man-made versions of isoprene are also available.
	Polybutadiene		Polybutadiene is a commonly used polymer system with dielectric potting compounds and coatings. It can be combined with other rubber polymers to form flexible sealants. Polybutadiene remains flexible even at low temperatures.
	Polyethylene (PE)		Polymers or resins are based on the polyethylene chemical system. Low density polyethylene polymers are used to form a variety of common or commodity-plastic components. High density (HDPE) and ultra-high molecular weight polyethylene (UHMW PE) have good friction and mechanical properties. They are used in medical devices, wear parts, and engineered components.
	PET / PBT		The polyethylene terphthalate (PET) and polybutylene terphthalate (PBT) polymer systems are based on a thermoplastic polyester or terphthalate system.
	Polyether Block Amide (PEBA)		Polyether block amide (PEBA) resins are a type of polyamide with thermoplastic elastomer characteristics. PEBA can be molded to form flexible components such as hydraulic hose, pneumatic tube, boots, and other parts.
	Polyolefin		Polyolefin is broad term encompassing several specific linear polymer types.
	Polypropylene (PP)		Polypropylene (PP) is commonly used in hot-melt adhesive systems. PP is a polymer based on polypropylene chemical bonds.
	Polysulphide		Polymer resins or compounds are based on polysulphide or polyphenylene sulphide (PPS) chemical systems.
	Polyurethane (PU, PUR)		Polyurethane (PUR) resins provide excellent flexibility, impact resistance and durability. Polyurethanes are formed through the reaction of an isocyanate component with polyols or other active hydroxyl group compounds. Polyurethanes require a catalyst, heat, or air evaporation to initiate and complete curing.
	Silicone		Plastic compounds, elastomer resins or polymers are based on the silicone chemical system. Silicones are produced through the hydrolysis and polymerization of silanes and siloxanes.
	Styrene Copolymer (SBR, etc.)		Products are based upon a styrene copolymer system such as styrene acrylonitrile (SAN), acrylic styrene acrylonitrile (ASA), acrylonitrile ethylene styrene (AES), styrene maleic anhydride (SMA), styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS), or styrene butadiene rubber (SBR). Styrene butadiene rubber (SBR) has good resistance to petroleum hydrocarbons and fuels. SBR is used widely with oils, hydraulic fluids, and alcohol. Many compound variations are available for specific applications. The suggested operating temperature for SBR is -30° to 275° F. Styrene-isoprene-styrene (SIS) and styrene-butadiene-styrene (SBS) copolymers are commonly applied in pressure-sensitive adhesive applications.
	Vinyl		Polymers are based on the vinyl chemical system. Examples include polyvinyl chloride (PVC), polyvinylidene chloride (PVDF), polyvinyl vinyl acetate (PVA), and polyvinyl alcohol (PVOH).
	Specialty / Other		Other specialty, proprietary or unlisted resin, chemical system or compound or polymer type.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Gel Elastomer?		Polymer, elastomer, adhesive, sealant or resin in the form of a high to moderate viscosity "solid" gel or liquid gel. Gel adhesives are more run resistant during application. Elastomer gel materials are used in cushioning, bumper or shock absorption applications.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Filler Material:
	Your choices are...
	Unfilled		Raw materials or unfilled resins do not contain any additional modifiers such as fillers, colorants, dispersants, plasticizers, wetting agents, levelers or defoamers. Theses products are used as starting components or raw materials for the production of finished plastic resins, elastomers, adhesives, sealant, coatings or other polymer-based products.
	Filled / Reinforced		Filled or reinforced compounds consist of resins with additional modifiers such as fillers, pigments, or chopped fiber reinforcements. Filled compounds are typically ready to use.
	Aramid Fiber		Polyimide (polyphthalamide) fiber based reinforcements such as DuPont’s Kevlar® fiber material. Aromatic polyimides are among the most thermally stable organic materials known.
	Carbon / Graphite		Compounded polymers or elastomers that use carbon or graphite powder, or fiber filler. Depending on the structure, carbon can strengthen or provide some improvement in electrical and thermal conductivity.
	Fabric / Pre-preg		Polymer or elastomer products using woven cloth or non-woven mat reinforcements to provide improved strength and/or stiffness.
	Fibers - Chopped (SMC / BMC)		Polymer or elastomer products using chopped fiber reinforcement to provide improved strength and/or stiffness. Sheet molding compounds (SMC) are provided in the form of sheets, usually with a carrier or release liner. Bulk molding compound (BMC) is provided in larger, bulk shapes.
	Fibers - Continuous / Wound		Polymer or elastomer products using continuous fiber reinforcement to provide improved strength and/or stiffness.
	Glass / Fiber Glass (FRP)		Compounded polymer or elastomer products using glass powder, fibers or cloth to provide improved strength and/or stiffness.
	Metal / MIM		Compounds using metal powder or fiber filler.
	Mineral / Inorganic		Compounded polymers or elastomers that are filled with a mineral, ceramic, silicate or other inorganic powder or fiber.
	Self-lubricated / Bearing Grade		Compounded polymers or elastomers using solid lubricant fillers such as graphite, molybdenum disulfide, PTFE or boron nitride.
	Other		Other unlisted, specialized, or proprietary filler type.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Shapes / Semi-finished Stock


	Form / Shape
	Your choices are...
	Film / Sheet		Material supplied or available in the form of sheet or film. Sheet has thickness between 0.006" and 0.250" and is 24 inches (609.6 mm) or over in width. Sheet is typically formed to precise thicknesses and/or width requirements.
	Flat / Bar Stock (Square, Rectangular)		Material supplied or available in the form of bar with a rectangular (flat) or square cross section.
	Hex Stock		Material supplied or available in a hex stock form with a hexagonal shaped cross section.
	Plate		Material supplied or available in the form of plate. Plate has a thickness of at least 0.250" or 1/4 inches or more.
	Profile / Structural Shape (Angle, Channel, I-Beam, Tee)		Material supplied or available in the form of an extrusion profile or structural shape such as angle, channel, I-beam, tee, rectangular tube or other cross sectional shapes.
	Rod / Round Stock		Material supplied or available in the form of bar or rod stock with a round cross section.
	Shim / Shim Stock		Thin stock manufactured to precise thicknesses for shimming, chocking or spacing applications.
	Sphere / Ball (Bearing Ball)		Material is available in the form of a sphere or precision ground ball. Precision balls are used in fabricating bearing balls, ball valve balls, check valve balls, and measuring balls.
	Specialty / Other		Other specialty, proprietary or unlisted material forms.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Hollow / Tubular Stock?		Material supplied or available in the form of tube, pipe or hollow stock with an open internal bore.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Casting / Cast Stock?		Products are in the form of a cast stock or shape such as cast nylon or polyamide rod or plate.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Extruded / Extrusion?		Products are in the form of an extruded stock or shape such as a nylon or polyamide extrusion.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Molded / Molded Stock?		Products are in the form of a molded stock or shape such as compression-molded composite rod or plate.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Overall Thickness		Overall thickness (for stock shape) of a stock form, tube wall or another fabricated component. Stock forms include bar, rod, plate or tube.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Overall Width / O.D.		Width or outer diameter of stock form material such as bar, plate, tube. Also, the average particulate diameter of raw materials such as powders, granules or pellets.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Overall Length		Length of a stock form material such as bar, rod, plate or tube.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	ID		Inner diameter or internal dimension of a tube or other hollow stock shape.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

Resins & Compounds



	Your choices are...
	Liquid		Adhesive, sealant or resin in the form of a low to moderate viscosity liquid.
	Pellets		Resin in the form of pellets, powder, granules or other feed stock forms such as bulk or sheet molding compound.
	Powder		Adhesive is supplied in the form of a finely divided particulate. Novolac phenolic resins are often provided in a powder form.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Compound Type:
	Your choices are...
	Adhesive		Adhesives are organic or inorganic chemical compounds for joining components. They require clean surfaces compatible with the adhesive.
	Casting Resin		Casting resins are plastic or elastomer compounds used to cast parts, molds or form a structure in place. Casting resins usually consist of a two-part (A+B) system that is placed into open molds or forms, where A is the resin and B is the catalyst or hardener. The fabricator mixes the components to initiate the curing process.
	Caulk / Grout		Caulks, grouts and joint compounds have a sufficiently low viscosity to allow pumping of the material into joints or cracks, to seal or repair. Caulk typically consists of a flexible material, while grouts are typically based on thin-set inorganic mortars. Polymer or resin binder based grouts are available.
	Filler / Reinforcement		Powder or particulate material designed or suitable for filler or reinforcement applications.
	Film Grade Resin / Compound		Plastic, elastomer or plastic material grade designed for the production of film or thin sheet.
	Encapsulant / Potting Compound		Encapsulants and potting compounds are resins used to encapsulate circuit boards or semiconductor devices, fill a container of electronic devices or infiltrate electrical coils to provide environmental protection and electrical insulation. Ceramic cement based potting compounds are available for high temperature applications.
	Extrusion Grade Resin / Compound		Plastic or elastomer grades suited for fabricating parts by extrusion or pultrusion.
	Leveling / Filling Compound		Leveling compounds, gap fillers, chocking materials and mastics are highly viscous materials applied by trowel to give thick glue lines usually with gap sealing properties. Chocks, chocking and floor leveling compounds are during the installation of heavy equipment or machine bases. Chocking or leveling compounds allow machines to be installed level or plumb and can be used in place of metal or plastic shims or shimstock. Mastics fill in gaps or irregularities in a surface before tile or other materials are applied. They are also used to bond tiles to sub-flooring. Repair compounds or gap fillers are used to fill in gaps or repair cavities or holes in a part, casting or structure. Typically, these compounds may also be used as adhesives or sealants or have sealing or bonding characteristics.
	Molding Compound / Molding Grade		Plastics or elastomers suited for the fabrication of parts via injection molding, compression molding, blow molding or film extrusion, reaction injection molding (RIM), resin transfer molding (RTM) or molded stock shapes.
	Sealant / Sealing Material		Sealants are liquid compounds used to fill gaps between seams, threads or on surfaces, to contain fluids, prevent leaks, and prevent infiltration of unwanted material. Higher viscosity sealants are used when larger gaps need to be filled.
	Thread Locker / Retainer		Threadlocking or threadlocker adhesives bind threads that are subject to transverse and axial loads against vibrational loosening. They reduce production costs and improve reliability by eliminating lock washers and other expensive locking devices. They preserve on-torque and distribute the load over the entire engagement length of the fastener, effectively eliminating premature material fatigue and fastener failure.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Features & Industry


	Features
	Your choices are...
	Anti-static / ESD Control		Material designed with relatively high electrically conductivity or low electrical resistivity for electronic, anti-static or electrostatic discharge (ESD) applications.
	Electrically Conductive Compound		Resins or compounds with a high degree of electrical conductivity (low resistivity) for applications such as anti-static or ESD control, EMI / RFI shielding, thick film metallization and device and board electrical interconnection.
	Electrical Insulation / Dielectric Material		Dielectric compounds and electrical insulation materials are used to form a barrier or isolator between electrical or electronic components. The voltage potential between the conductor and conductive components will influence material selection based on the dielectric strength in order to reduce shorting. Dielectric constant and loss tangent are important parameters in minimizing crosstalk between insulated circuit paths.
	EMI / RFI Shielding Material		Polymers or elastomers designed to provide shielding from electromagnetic interference (EMI) or radio frequency interference (RFI). Typically, these compounds have a high degree of electrical conductivity.
	Flame Retardant / UL 94V-0 Rated		Products are flame retardant in accordance to Underwriters Laboratories, Inc. (UL) Flame Class 94V-0 or other equivalent ISO standards. These materials reduce the spread of flame or resist ignition when exposed to high temperatures. They also insulate the substrate and delay damage to the substrate.
	Flexible / Dampening		Products are designed to provide flexibility or dampening of sound, vibration or shock in suitable applications. Flexible adhesives or sealants form a layer that can bend or flex without cracking or delaminating.
	Non-corrosive Cure		Silicone or reactive systems use a non-corrosive cure system such as a metal or oxime catalyst.
	Phase Change		Thermal interface materials use a phase change to enhance thermal characteristics or heat absorption from electronic devices or electrical components.
	Solvent Based (Volatile Organic)		Solvent-based adhesive resins use a volatile organic solvent (VOC) to thin or alter viscosity. Typically, solvent-based adhesive resins result in greater environmental or regulatory control problems. Solvents can also present a fire hazard or risk explosion, depending on the plant or job site.
	Thermal Compound / Interface (Thermally Conductive)		Material designed to form a thermally conductive layer on the substrate, between components or within a finished electronic product. Thermally conductive resins, thermoplastics, encapsulants, potting compounds, tapes, pads, adhesives and greases are often used between a heat-generating electrical device and a heat sink to improve heat dissipation.
	Thermal Insulation / Heat Insulating		Thermally insulating resins, plastics, compounds and encapsulants provide a thermal barrier between components and a hot or cold source.
	UL Approved		Products are approved to or recognized under the requirements of Underwriters Laboratories, Inc. (UL).
	Water Based / Latex Dispersion		Water-based or water borne adhesive resins are water soluble or water emulsion-based resin systems that typically do not contain any VOC solvents. Water-based adhesive resins usually present fewer environmental or regulatory control problems.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Industry:
	Your choices are...
	Aerospace		Products are designed for aerospace applications. For example, they can be used to bond composite structures to other composite or metallic frame components.
	Automotive		Products are designed for automotive applications. For example, they can be used to bond panels and seal windows.
	Electronics		Products are designed for electronics applications. For example, they can be used in potting or encapsulating compounds, conductive adhesives, and dielectric sealants.
	Electrical Power / HV		Products are resins, compounds and plastic composites suitable for electrical power or high voltage applications such as generator or motor assemblies, coil or transformer manufacturing, and switch or circuit breaker insulation.
	Optoelectronics / Photonics		Products are designed for optoelectronics or photonics applications such as cements for bonding simple lenses into compound structures.
	Semiconductors / IC Packaging		Products are designed or suitable for semiconductor or semiconductor packaging applications.
	Marine		Products are designed for marine applications. They can be immersed in water and withstand exposure to marine atmospheres.
	Medical / Food (Sanitary / FDA)		Products are suitable for medical or food-contact applications. They typically comply with requirements from regulatory agencies such as the Food and Drug Administration (FDA), U.S. Department of Agriculture (USDA), National Science Foundation (NSF), 3A-Dairy, Canada AG, or USP Class VI.
	Military / Government (MIL-SPEC / GG)		Products adhere to U.S. military specifications (MIL-SPEC).
	OEM / Industrial		Products are designed for use by original equipment manufacturers (OEMs) for the assembly, sealing or fabrication of products.
	Repair (MRO) / Construction		Products are designed for use by construction contractors and in maintenance, repair and operation (MRO) applications. Adhesives or sealants can be designed for general-purpose construction or architectural applications. Construction materials include wood, wood products, glass, cement products (mortar, concrete, masonry), plaster board, metal trim, flooring tile, sub-floor or underlayment, plaster board, sheet metal roofing or flash, metal ties, insulation materials (fiberglass, foam) and bitumen-based roofing materials.
	Tooling / Mold Material		Products are designed for tooling or mold fabrication such as polyurethane shapes or castable silicones.
	Other		Other unlisted industry.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Electrical & Optical Properties


	Electrical Resistivity		Resistivity is the longitudinal electrical resistance (ohm-cm) of a uniform rod of unit length and unit cross-sectional area. Resistivity is the inverse of conductivity.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Dielectric Strength		Dielectric strength is the maximum voltage field that the material can withstand before electrical breakdown occurs.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Dielectric Constant (Relative Permittivity)		The dielectric constant is the relative permittivity of a material compared to a vacuum or free space. k = _r= / _o= where is the absolute permittivity of the material and _ois the absolute permittivity of a vacuum 8.85 x 10^-12 F/m.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Index of Refraction		The index of refraction is a measure of the speed of light in a material.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Transmission		This is the amount of light transmitted through a material.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

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