Custom Natural Rubber Products
Natural Rubber (NR) is a highly elastic hydrocarbon polymer derived from natural latex tapped from Hevea brasiliensis trees.
Chemically, it is cis-1,4-polyisoprene, a linear polymer that crystallizes under strain, giving it exceptional resilience, tensile strength, and toughness.
At Eutsler Technical Products, our Natural Rubber elastomers are engineered for outstanding resilience and elasticity, delivering rapid elastic recovery and high energy return (up to 80% rebound) — ideal for vibration and shock isolation applications. NR compounds exhibit excellent dynamic fatigue and crack-growth resistance, performing exceptionally well under cyclic loading and mechanical vibration.
Natural Rubber’s mechanical strength is further enhanced by strain-induced crystallization, providing superior tear and abrasion resistance and outstanding fatigue endurance under dynamic service. Its excellent low-temperature flexibility allows functional elasticity down to –75 °F (–60 °C). NR also bonds easily to metals and fabrics through multiple processing techniques, enabling high-strength rubber-to-metal assemblies such as mounts, couplings, and vibration isolators.
In addition, NR is a biodegradable, renewable material sourced from natural latex — an environmentally sustainable elastomer option.
Unmatched Durability in Harsh Environments
Natural Rubber is a versatile elastomer used across automotive, industrial, and food-contact sectors.
Eutsler designs and manufactures custom NR components, including:
- Vibration isolators and bushings
- Roll coverings and drive elements
- Diaphragms, gaskets, and non-oil seals
- Bonded metal-rubber assemblies
Regardless of the application, our NR formulations are precision-engineered to meet demanding performance and durability requirements.
Superior Material Performance
Eutsler’s molded Natural Rubber products exhibit:
- Excellent compression set resistance, minimizing deformation under load
- Outstanding fatigue and vibration life, maintaining performance under continuous cyclic stress
- Good resistance to water, mild chemicals, and weak acids
- Biocompatibility and non-toxicity, allowing use in medical, food-grade, and hygienic environments
Note: NR is not recommended for continuous exposure to petroleum oils, fuels, or ozone without the use of protective compounding systems.
Work with Eutsler for Precision-Molded NR Components
With over 60 years of elastomer manufacturing expertise, Eutsler Technical Products provides custom Natural Rubber parts designed to meet exact performance and environmental specifications.
Our engineering team works closely with customers to select the optimal compound formulation for each application, balancing performance, cost, and durability.
As an ISO 9001:2015-certified company, Eutsler ensures stringent quality control from material selection and prototyping through final production.
Request a quote today for precision-molded Natural Rubber components built to your exact requirements.
General Characteristics of Natural Rubber (NR)
| Property | Typical Range / Rating | Comments |
|---|---|---|
| Durometer Range (Shore A) | 30 – 90 | Wide range for soft to firm compounds |
| Tensile Strength (psi) | 1,450 – 4,400 | Excellent — enhanced by strain crystallization |
| Elongation at Break (%) | 200 – 800 | Exceptional elasticity |
| Compression Set | Good | Retains shape under sustained load |
| Resilience / Rebound | Excellent (≈ 80%) | Benchmark for elasticity |
| Abrasion Resistance | Good | High wear tolerance under dynamic load |
| Tear Resistance | Excellent | Outstanding toughness |
| Solvent Resistance | Limited | Performs well in water and mild chemicals |
| Oil Resistance | Poor | Not suitable for hydrocarbons or fuels |
| Low-Temperature Usage | –75 °F (–60 °C) | Remains flexible and elastic |
| High-Temperature Usage | 175 °F (80 °C) | Good; protective compounding recommended |
| Aging / Weather / Sunlight Resistance | Limited | Ozone/UV inhibitors required for outdoor use |
| Adhesion to Metals | Excellent | Ideal for bonded assemblies |
Summary
- Chemical Family: Natural Polyisoprene
- Service Temperature Range: –75 °F to 175 °F (–60 °C to 80 °C)
- Distinguishing Features: Unmatched resilience, fatigue strength, and tear resistance
- Key Advantages:
- High elasticity and energy return
- Superior mechanical durability
- Excellent vibration damping
- Renewable, sustainable origin
- Limitations:
- Poor resistance to oils, ozone, and solvents
- Limited heat aging above 175 °F
Natural Rubber remains the material of choice for dynamic, high-resilience applications — delivering superior toughness, fatigue endurance, and vibration absorption in critical industrial and mechanical systems.
Isoprene Rubber (IR) is a synthetic polyisoprene elastomer designed to closely replicate the structure and performance of Natural Rubber (NR). Produced through the polymerization of pure isoprene monomer, IR delivers uniform molecular architecture, excellent elasticity, and consistent mechanical properties, while offering improved purity, processing control, and aging stability compared to natural latex-derived rubber.
At Eutsler Technical Products, our IR compounds are formulated for high resilience, fatigue resistance, and tensile strength, making them ideal for dynamic mechanical applications, vibration isolation, and bonded assemblies where durability and flexibility are essential.
IR combines the mechanical strength of NR with enhanced batch-to-batch uniformity, ensuring reliable performance in precision-molded parts.
Performance Advantages
- Excellent resilience and elastic recovery provides high rebound (≈75–80%) and fast elastic response — ideal for vibration and impact control.
- High tensile strength and tear resistance comparable to NR, with excellent crack-growth resistance and toughness.
- Excellent fatigue life and dynamic performance retains properties under repeated flexing and compression cycles.
- Good low-temperature flexibility maintains elasticity down to –75 °F (–60 °C).
- Improved processing and uniformity synthetic production eliminates natural impurities and minimizes variability.
- Good adhesion to metals and fabrics bonds strongly when formulated with appropriate adhesion systems.
- Excellent compression-set resistance retains shape and preload under sustained load.
- Biologically inert and non-allergenic suitable replacement for NR where natural latex proteins are restricted.
Applications
Eutsler designs and produces custom IR compounds for high-stress and dynamic applications requiring superior resilience and fatigue resistance without dependence on natural latex sources.
Typical uses include:
- Vibration isolators and suspension mounts
- Dynamic seals and diaphragms
- Roll coverings and tire components
- Bushings, couplings, and flexible dampers
- Rubber-to-metal bonded assemblies
- Shock pads, bearings, and expansion joints
- Medical or food-contact products (when compounded to regulatory standards)
IR is especially valuable where consistent properties, controlled processing, and NR-like elasticity are required with enhanced formulations.
Superior Material Performance
Eutsler’s IR formulations provide:
- Tensile strength: 2,000 – 3,500 psi with elongation up to 800%
- Excellent fatigue and crack-growth resistance in dynamic loading
- Good aging stability compared to NR, with less reversion at elevated temperatures
- Low hysteresis and high rebound for energy-efficient damping behavior
- High purity and controlled microstructure, enabling consistent cure and mechanical reproducibility
Note: IR shares NR’s sensitivity to oils, fuels, ozone, and weathering. Protective compounding or coatings are required for outdoor or oil-contact service.
Work with Eutsler for Precision-Molded IR Components
With over 60 years of experience, Eutsler Technical Products manufactures custom Isoprene Rubber parts engineered for superior dynamic performance and longevity.
Our engineering team works directly with clients to tailor polymer grade, filler system, and cure package to achieve optimal strength, flexibility, and bonding characteristics.
As an ISO 9001:2015-certified manufacturer, Eutsler ensures precise quality control, consistent compounding, and repeatable production results.
Request a quote today for precision-molded IR components designed for your exact operating conditions.
General Characteristics of Isoprene Rubber (IR)
| Property | Typical Range / Rating | Comments |
|---|---|---|
| Durometer Range (Shore A) | 30 – 90 | Adjustable for soft to firm designs |
| Tensile Strength (psi) | 2,000 – 3,500 | Comparable to Natural Rubber |
| Elongation at Break (%) | 400 – 800 | Excellent flexibility |
| Compression Set | Good – Excellent | Maintains preload over time |
| Resilience / Rebound | Excellent (≈ 75–80 %) | High energy return |
| Abrasion Resistance | Good | Stable under mechanical wear |
| Tear Resistance | Excellent | Outstanding for dynamic service |
| Oil Resistance | Poor | Not suitable for hydrocarbons |
| Solvent Resistance | Limited | Stable in water and alcohols only |
| Low-Temperature Usage | –75 °F (–60 °C) | Excellent flexibility |
| High-Temperature Usage | 175 °F (80 °C) | Prolonged exposure may cause reversion |
| Weather / Ozone / Sunlight Resistance | Poor | Requires antiozonant protection |
| Adhesion to Metals | Excellent | Strong bonding with proper primer systems |
| Fatigue Life / Dynamic Stability | Outstanding | Ideal for vibration and flexing parts |
Get in Touch with Our Experts Today!
Summary
- Chemical Family:Synthetic Polyisoprene (cis-1,4-Polyisoprene)
- Service Temperature Range:–75 °F to +175 °F (–60 °C to +80 °C)
- Distinguishing Features:Synthetic equivalent of Natural Rubber with improved uniformity and aging stability
- Key Advantages:
- NR-level elasticity and resilience
- Excellent fatigue, tear, and dynamic strength
- Predictable, reproducible compound performance
- Non-allergenic, latex-free composition
- Limitations:
- Poor oil, ozone, and weather resistance
- Limited heat aging above 175 °F
Isoprene Rubber (IR) delivers Natural Rubber-like performance with greater manufacturing consistency and purity, making it an ideal choice for vibration-control, dynamic sealing, and fatigue-resistant components where precision and repeatability are essential.
Why Choose Eutsler Technical Products?
R&D
Experienced staff develop high performance and long life parts
Material Selection
Over 300 compounds or custom elastomeric compounds available
Mold Design
Custom molds are designed ensuring tolerances are met
Manufacturing
Molding, extrusion and die cutting services to build your part
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