The Superior Alternative to Gaskets
Apple Rubber's housing seals represent a significant advancement over conventional flat gaskets and alternative gasketing methods across a diverse range of applications. These seals are custom-engineered to precise specifications, featuring a toroidal geometry that offers superior dimensional control compared to die-cut, planar gaskets.
Housing Seals vs. Traditional Gaskets
Flat Gasket Limitations
- Dimensional Variability: Subject to die-cutting tolerances
- Contact Mechanics: Large surface area contact, leading to non-uniform pressure distribution
- Fastener Load Requirements: High clamping forces necessary to achieve effective sealing
- Geometric Constraints: Limited to two-dimensional configurations
O-Ring Housing Seal Advantages
- Precision Manufacturing: Molded to tolerances as tight as ±0.003″ (material-dependent)
- Optimized Contact Mechanics: Point load or narrow band contact area, ensuring concentrated sealing pressure
- Reduced Compressive Force: Lower fastener torque required due to efficient load distribution
- Surface Irregularity Accommodation: Enhanced ability to conform to and seal minor surface imperfections
| Feature/Benefit | Housing Seal | Flat Gasket |
|---|---|---|
| Round o-ring cross section to seal better | Yes | No |
| Reusable after disassembly | Yes | No |
| Choice of colors | Yes | Limited |
| Complex shapes | Many | Limited |
| Design assistance | Yes | No |
| Buy direct – no middlemen | Yes | Not likely |
| Low compression set | Yes | Not likely |
| Precision level tolerances | Yes | No |
Advanced Material Properties and Customization
Elastomer Characteristics
- Durometer Range: Standard offerings from 20 to 80 Shore A
- Low Durometer Options: Custom formulations available below 20 Shore A for applications requiring minimal compression set, particularly suited for plastic or low-rigidity metal housings
- Geometric Versatility: Capability to produce complex three-dimensional seal configurations
- Color Customization: Precise color matching available in both opaque and translucent variants
Liquid Silicone Rubber (LSR) Processing
Injection Molding: Utilizes two-component, platinum-catalyzed silicone systems
Key Advantages
- Dimensional Consistency: Part-to-part variation typically within ±0.002″
- Surface Finish: Near-zero flash production capabilities
- Cycle Times: Rapid cure kinetics allowing for high-volume production
- Complex Geometries: Ability to mold intricate features and undercuts
Thermoset Elastomer Processing
Compression Molding: Suitable for high durometer materials and larger part sizes
Transfer Molding: Ideal for intricate geometries and insert molding applications
Rapid Prototyping and Engineering Support
In-House Capabilities
- Tooling Fabrication: CNC machining of mold components for quick turnaround
- Material Science Expertise: Comprehensive knowledge of elastomer and thermoplastic polymer systems
- Design for Manufacturability (DFM): Optimization of seal designs for production efficiency
Engineering Consultation
- Material Selection: Guidance on elastomer choice based on chemical compatibility, temperature resistance, and mechanical requirements
- Finite Element Analysis (FEA): Simulation of seal performance under various loading conditions
- Failure Mode and Effects Analysis (FMEA): Proactive identification and mitigation of potential failure mechanisms
Color Customization Options
- Standard Offerings: Extensive range of pre-formulated colors
- Custom Color Matching: Capability to match specific Pantone or RAL color standards
- Opacity Control: Formulations available from fully opaque to highly translucent (>90% light transmission)
Specialized Additives
- UV Stabilizers: For enhanced outdoor durability
- Antistatic Agents: To control surface resistivity
- Luminescent Pigments: For glow-in-the-dark or photoluminescent applications
For detailed technical specifications, material data sheets, or to initiate a custom housing seal development project, please contact Apple Rubber's applications engineering team.