DIAPHRAGMS
Rubber diaphragms are flexible membranes used to separate two chambers while transferring pressure or movement. Commonly found in pumps, valves, and regulators, they must offer consistent elasticity and chemical resistance. Bright Star manufactures diaphragms for precise performance and long service life. Our diaphragms are engineered for dynamic response, low permeation, and resistance to aggressive media such as acids, solvents, and gases.
Polymers:
BRIGHT STAR has successfully developed formulations and rubber components based on the following polymers and has been supplying to diverse industries over
the past few decades.
- FFKM/ Perfluoroelastomer
- FKM / Viton ®
- TFE/P/Aflas ®
- Silicone, Flurosilicone
- Nitrile (NBR), Carboxylated
- NBR (XNBR) / PVC Nitrile
- SBR
- EPDM, EPR
- Chloroprene / Neoprene®
- Natural / PLC / Polyisoprene
- Polyurethane
| MATERIAL | HARDNESS RANGE (SHORE A) | HIGH TEMP °C | LOW TEMP °C | STEAM |
| FFKM | 70-90 | 300 | -10 | E |
| FKMÂ (VITON) | 50-90 | 230 | -20 | F-G |
| AFLAS | 60-90 | 200 | -10 | E |
| NBR | 20-95 | 100 | -30 | F-G |
| HNBR | 50-95 | 150 | -40 | G |
| SBR | 40-90 | 100 | -40 | P |
| EPDM | 40-90 | 150 | -40 | E |
| SILICONE | 20-80 | 200 | -60 | F-G |
| NR | 30-90 | 70 | -50 | P |
| CR | 40-90 | 100 | -40 | F |
Rating
- E = Excellent – Suitable for prolonged exposure to saturated steam at high temperatures
- G = Good – Suitable for moderate steam exposure with some limitations
- F = Fair – Can handle light or intermittent steam but not continuous service
- P = Poor – Degrades quickly in steam; not recommended
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Related Products
Rubber molds are custom-shaped tools or components made through compression or injection molding. They are used to form or replicate parts in industries such as consumer goods, packaging, and medical devices. Bright Star develops rubber molds based on client drawings or samples. Our precision molding capabilities allow for high-volume production of complex geometries with tight tolerances and material traceability.
Rubber bellows protect moving parts from dust, dirt, moisture, and vibration. They are flexible connectors used in mechanical joints, actuators, and valves. Our bellows ensure smooth movement and extend the service life of sensitive components in automation and transport equipment. We produce both convoluted and molded types in various configurations for axial, lateral, or angular movemen
Rubber gaskets provide a reliable seal between two surfaces in static applications. Bright Star manufactures gaskets from NBR, EPDM, Silicone, and Neoprene for applications in water pipelines, HVAC systems, and flanged joints. They offer excellent compressibility, resilience, and resistance to weathering. We offer precision die-cut and custom-molded gaskets that conform to a variety of surface geometries, even under high pressure and fluctuating temperatures.
Rubber seals are used to fill gaps between two surfaces and prevent fluid leakage, dust ingress, or vibrations. These include lip seals, shaft seals, and radial seals made from materials such as NBR, Viton, and Silicone. Our seals ensure durability and chemical resistance in harsh working conditions, serving key sectors like automotive, appliances, and heavy machinery. We offer custom-molded and standard seal designs that can withstand a wide range of temperatures and media, ensuring long-term performance.
Rubber bushes absorb shock and reduce noise and vibration between metal parts. They are used in suspension systems, engine mounts, and industrial machinery. Our bushes are made from high-durability elastomers to withstand heavy loads and environmental stresses. Bright Star offers cylindrical, flanged, and bonded bushes to meet specific mechanical performance requirements.
Rubber plugs and caps are used to seal, mask, or protect components from dust, moisture, and corrosion. They are commonly used in surface finishing, powder coating, automotive, and electronics. We offer standard and custom-molded solutions in various sizes and hardness. These components are designed for easy installation and removal, and are available in high-heat-resistant and chemical-resistant formulations
O-rings are circular elastomeric seals used to prevent the leakage of fluids or gases in mechanical systems. These versatile components are widely employed across industries such as automotive, aerospace, oil & gas, food processing, and more. Bright Star manufactures O-rings in a wide range of sizes and polymers like NBR, Viton, Silicone, EPDM, Neoprene, and FFKM to suit different chemical and temperature conditions. Their simplicity, cost-effectiveness, and high sealing efficiency make them a critical component in both static and dynamic applications. We ensure tight dimensional tolerances, excellent resilience, and compatibility with a variety of lubricants and fluids for both high- and low-pressure applications.
Customized rubber components are engineered for specific client applications, from sealing to vibration isolation. Bright Star Rubber Corporation specializes in tailored solutions with rapid prototyping, tooling, and material selection. We collaborate with clients across sectors to co-develop components that meet unique design, compliance, and environmental performance standards
These rubber parts are formulated with carbon or conductive fillers to safely dissipate static electricity. They are critical in electronics, explosive environments, and cleanroom operations. Bright Star’s anti-static components meet ESD and EMI standards. Our product line includes conductive mats, tubing, seals, and gaskets tailored to sensitive electronic assemblies and volatile handling areas
Rubber washers are flat, disc-shaped components that provide cushioning, sealing, and spacing between surfaces. These are used in plumbing, electrical, and automotive assemblies. Bright Star washers are designed to resist water, chemicals, and vibration, enhancing the longevity of joints. Our washers are also effective in noise dampening and are available in standard and non-standard dimensions for versatile application
