Enhanced Eutsler Custom Molded Elastomer Grommet & Washer Products
Introduction
Eutsler Technical Products designs and manufactures custom molded elastomer grommets and washers engineered to deliver reliable sealing, vibration isolation, and mechanical protection in harsh operating environments.
With over 60 years of elastomer compounding and molding expertise, Eutsler combines custom material formulation, precision tooling, and ISO 9001:2015-certified quality systems to produce grommets and washers that meet tight dimensional tolerances, environmental durability, and mechanical integrity requirements.
Our Grommet & Washer Technology supports aerospace, oil & gas, automotive, industrial, and energy applications where sealing performance and long-term resilience are critical.
Core Design Features
Custom Geometry & Functionality
- Designed to protect against abrasion, vibration, fluid ingress, and mechanical shock
- Configurable as through-hole grommets, isolation mounts, sealing washers, or bonded inserts
- Optimized for specific deflection, compression, and rebound behaviorthrough compound and geometry tuning
Material Flexibility
- Available in custom elastomerstailored for chemical, oil, temperature, or environmental resistance
- Shore hardness range: 30 – 95Adepending on isolation or sealing function
- Optional dual-durometer or reinforced grommetsfor enhanced load distribution
Precision Manufacturing
- Molded in compression, transfer, or injection presseswith temperature uniformity ±3 °F
- Post-trimmingfor concentricity and edge definition
- Flash-free molding for clean edges and leak-free seating surfaces
Material & Compound Options
Eutsler formulates and validates each compound in-house to ensure exact performance matching your application’s environment.
| Elastomer Family | Examples | Key Performance Attributes |
|---|---|---|
| General Purpose | NR, SBR, CR | High resilience, toughness, and fatigue resistance |
| Oil & Fuel Resistant | NBR, HNBR, ACM | Excellent hydrocarbon and amine compatibility |
| Chemical & Heat Resistant | FKM, FFKM, TFEP | Superior thermal and fluid resistance (up to 500 °F) |
| Weather & Steam Resistant | EPDM, CSM | Excellent aging and water resistance |
| Low-Temperature Flexibility | VMQ, FVMQ | Maintains elasticity to –75 °F |
| Low-Permeability / Damping | IIR, BIIR | Excellent isolation and gas sealing properties |
All compounds are validated using ASTM D5289 rheometry, D395 compression set, and D573 heat aging to confirm material performance and stability.
Product Types & Configurations
- Sealing Washers – Flat, conical, or bonded metal/elastomer configurations
- Protective Grommets – Through-hole, blind, and flanged types for cable or line protection
- Isolation Grommets – Designed for controlled deflection under dynamic loading
- Bonded Washers & Inserts – Elastomer-to-metal or elastomer-to-fabric assemblies
- Vibration Damping Washers – Tuned durometer for NVH (noise, vibration, harshness) reduction
- Custom Molded Geometries – Complex shapes and recess profiles for precision interfaces
Manufacturing Capabilities
- Precision Molding: Compression, transfer, and injection molding for parts from 0.125" to 24"+ diameter
- Bonded Assemblies: Rubber-to-metal and rubber-to-plastic bonding (ASTM D429 validated)
- Machining & Finishing: OD grinding, and post-cure trimming
- Surface Treatments: Primer coatings for improved adhesion and wear resistance
- Quality Control: In-process dimensional inspection and batch traceability
Testing & Validation
Eutsler’s in-house QA lab validates every design and production batch under ASTM standards.
| Property / Test | Standard | Typical Range / Specification |
|---|---|---|
| Hardness | ASTM D2240 | 30 – 95 Shore A |
| Tensile Strength | ASTM D412 | 1,500 – 4,500 psi |
| Elongation | ASTM D412 | 150 – 700 % |
| Tear Strength | ASTM D624 | 100 – 400 ppi |
| Compression Set | ASTM D395 | < 25 % |
| Heat Aging | ASTM D573 | ≤ 15 % property change |
| Fluid Immersion | ASTM D471 | < 10 % volume change |
| Adhesion Strength (bonded washers) | ASTM D429 | 10 – 25 MPa |
| Temperature Range | — | –75 °F to +500 °F (compound dependent) |
All products undergo 100 % visual inspection for voids, flash, and surface imperfections, followed by random dimensional audits and cure verification testing.
Engineering Design Guidance
Grommet Design
- Compression ratio: Typically 10–25 % of cross-section for optimal retention and damping
- Groove fit: Maintain 0.005–0.010 in interference for secure mount retention
- Material selection: Low durometer for isolation, high durometer for structural grommets
- Edge design: Radiused or chamfered edges prevent tearing under load
Washer Design
- Seal face compression: 10–20 % typical for static sealing
- Bonded configurations: Controlled adhesive thickness (0.5–2 mils) for load transfer
- Vibration damping: Select low-modulus compounds or bi-material layers for resonance control
- Torque retention: Ensure sufficient hardness (≥ 70 Shore A) for bolted flange sealing
Applications
Eutsler grommets and washers are used across a wide spectrum of industries and performance-critical systems:
- Oil & Gas: Isolation grommets, packer element washers, bonded metal seals
- Aerospace: Vibration mounts, fuel and hydraulic line grommets, pressure seals
- Automotive: Shock and suspension isolators, NVH damping washers
- Industrial Equipment: Cable pass-throughs, pump mounts, and sealing interfaces
- Energy & Power: Transformer and turbine isolation grommets
- Medical / Food Service: Silicone washers and grommets compliant with FDA and USP Class VI
Advantages of Eutsler Grommet & Washer Technology
- Custom-Engineered Compounds: Tailored chemistry for each environment and load condition
- Precision Molded Quality: Tight tolerance control and repeatable curing performance
- Bonding Integration: Rubber-to-metal and composite adhesion systems tested for durability
- Material-to-Part Traceability: Full batch documentation and retained samples
- Versatile Applications: Designs available for static sealing, dynamic isolation, or hybrid systems
- Long-Term Durability: Proven performance under high temperature, vibration, and chemical exposure
Performance Envelope
| Capability | Typical Range / Limit |
|---|---|
| Hardness | 30 – 95 Shore A |
| Tensile Strength | 1,500 – 4,500 psi |
| Elongation | 150 – 700 % |
| Tear Strength | 100 – 400 ppi |
| Compression Set | < 25 % |
| Bond Strength | 10 – 25 MPa |
| Temperature Range | –75 °F to +500 °F |
| Dimensional Tolerance | ± 0.005 – 0.020 in (ARPM A1–A3) |
From Concept to Production
- Define– Load, pressure, vibration, and environmental parameters
- Design– Optimize geometry, compound, and bonding system
- Prototype– Molded sample fabrication and ASTM testing
- Validate– Dimensional, mechanical, and performance testing
- Deliver– Certified, production-ready grommets and washers
Partner with Eutsler Technical Products
Eutsler’s Custom Molded Grommets and Washers are engineered for real-world performance where isolation, sealing, and reliability matter most.
With in-house compounding, molding, bonding, machining, and quality testing, we ensure every part meets exact specifications—delivering precision, repeatability, and durability across industries.
Get in Touch with Our Experts Today!
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
Connect with Our Experts
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