RUBBER SEALS
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.
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
Related Products
Rubber pipeline rings provide sealing and cushioning in duct pipes, joints, and manholes. They absorb expansion, reduce vibration, and prevent leakage in drainage and sewer systems. Bright Star offers rings in EPDM, NBR, and Neoprene for civil, industrial, and infrastructure applications
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.
Hydraulic seals are critical for maintaining pressure in hydraulic cylinders and preventing fluid leaks. These include piston seals, rod seals, wipers, and guide rings designed to handle high pressure and dynamic motion. Manufactured using wear-resistant materials, Bright Star’s hydraulic seals serve industries such as construction, agriculture, and manufacturing. They are developed to endure extreme forces, resist extrusion, and function reliably in high-speed or high-load applications
Rubber sheets are flat elastomeric materials used for gasketing, flooring, insulation, and lining. Bright Star offers sheets in various polymers (NBR, EPDM, Neoprene, Silicone) and hardness, suitable for industrial, electrical, and sanitary applications. Sheets are available in cloth-inserted or plain forms, and can be supplied with adhesive backing or cut-to-size upon request.
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
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 droppers form the squeezing part of liquid dispensing systems. Used in syrups and eye drops, they are made from medical-grade elastomers to ensure purity and elasticity. Bright Star produces droppers in various sizes, colors, and durometers to meet branding and dosage accuracy requirements.
Pneumatic seals operate in compressed air environments and are used in pneumatic cylinders, valves, and actuators. Unlike hydraulic seals, they are designed to function at lower pressures and require minimal lubrication. Bright Star’s pneumatic seals are known for their precision fit, low friction, and long service life in automation and machinery applications. They are ideal for dry environments and offer excellent resistance to ozone, aging, and temperature fluctuations
Rubber grommets are circular components inserted into holes to protect wires or cables from abrasion. They are essential in electrical panels, automotive firewalls, and machinery housings. Our grommets are manufactured in various sizes and polymers to ensure flexibility, insulation, and durability. These components also dampen vibrations, reduce noise, and can be customized to suit different hole diameters, wall thicknesses, and environmental conditions
RINGS Quad Rings, also known as X-rings, are an upgraded version of traditional O-rings. They feature a four-lobed design that offers improved sealing performance and reduced friction. These are ideal for rotary and reciprocating motion, providing greater stability and resistance to twisting compared to standard O-rings. Bright Star’s X-rings are used in hydraulic systems, pneumatic tools, and other demanding sealing applications. Their unique geometry allows for better lubrication retention and less wear, increasing operational life and efficiency
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.
