Hot Sale High-Temperature Silicone Rubber O-Ring Gasket

Silicone gaskets are precision-engineered from high-quality silicone rubber, offering exceptional resistance to extreme temperatures, ozone, and weathering. They maintain excellent flexibility and compression set over a wide temperature range, from -60°C to 230°C (-76°F to 446F). 

These gaskets provide a reliable, long-lasting seal against moisture, dust, and chemicals. Ideal for a wide range of applications including electronics enclosures, automotive assemblies, industrial machinery, and food processing equipment. Available in various hardness levels (Shore A), colors, and can be custom die-cut to your specific design and size requirements.

Silicone Rings Introduction:

• Related products: Silicone plugs, rubber plugs, plugs, sealing plugs Product
• Material: Environmentally friendly silicone, food grade Product
• Colors: Black, White, Transparent, Customized for Other Colors

Our customized silicone gasket rings are suitable for pairing with most bottles, jars or glasses. Perfect for fridge and freezer storage, pantry storage, transporting food or beverage without leaking, home made fermenting lids, and much more.

The silicone ring gasket is made of food-grade silicone. Silicone products have good weather resistance, no deformation or aging. Not easy yellowing, use this silicone airtight seal to replace your broken sealing rings. Suitable for sealing mason jars containing small objects such as fruits, cookies, candies, salad, milk, smoothies, tea, coffee, and screws.

Silicone rubber gaskets are preferred in critical applications due to their unique set of properties:

• Exceptional Temperature Resistance

Withstands a wide operating range, typically from -60°C to 225°C (-76°F to 437°F), and briefly even higher. This makes them suitable for both freezing environments and high-heat applications.

• Superior Environmental Resistance

Excellent resistance to ozone, UV radiation, and weathering. They do not crack or degrade easily when exposed to sunlight and outdoor conditions, ensuring a long service life.

• Excellent Flexibility & Compression Set

Remains flexible and elastic over a long period. They have good compression set resistance, meaning they return to their original shape after compression, maintaining a reliable seal.

• Physiologically Inert & Safe

Odorless, tasteless, and non-toxic. They can be manufactured to comply with FDA (Food), USP Class VI (Medical), and NSF** standards, making them safe for use with food, beverages, and pharmaceuticals.

• Good Chemical Resistance

Resists water, oxidation, and many common chemicals. However, they are not recommended for use with concentrated acids, alkalis, or certain solvents.

• Excellent Electrical Insulation Properties

Serves as an effective electrical insulator, ideal for sealing electronic enclosures and components.

• Durability and Versatility

Available in various forms (solid, sponge), colors, and hardness levels (Shore A). They can be easily custom die-cut  into complex shapes and sizes.

Function of the silicone rubber o ring

O-Rings are used in sanitary pipeline systems for the Auto, Machinery, Food, Dairy, Beverage, Pharmaceutical and Bio-Tech industries. Rubber Fab offers a full line of AS568 dash numbers, metric, and specialty o-ring sizes that are manufactured using EPDM, NBR, FKM Fluoroelastomer, Buna-N, PTFE, Silicone and so on.

The o-rings used in cylinder, pump, railcars, truck, washing machine, instrument and meter, mine equipment, pipeline, household appliances, automobile, steamboat, industrial electrical equipment, building door& window, construction machinery, construction bridges and tunnel.

Common Applications & Uses

Due to these advantages, silicone gaskets are used across a wide range of industries:

• Automotive & Transportation

• Engine gaskets (valve covers, oil pans)
• Seals for headlights, taillights, and radiators
• Intake system seals and turbocharger intercoolers
• Seals for sensors and electronic control units (ECUs)

• Electronics & Electrical

• Sealing enclosures for outdoor telecommunications equipment
• Gaskets for LED lighting fixtures and junction boxes
• EMI/RFI Shielding Gaskets (when made with conductive fillers)
• Seals for control panels and household appliances

• Aerospace & Defense

• Seals in cabin pressurization and environmental control systems
• Gaskets for avionics cooling and electronic bays
• Seals in fuel and oxygen systems (using specialized grades)

• Food & Beverage Processing

• Seals for food processing machinery (e.g., pasteurizers, homogenizers)
• Gaskets for ovens, dishwashers, and refrigerators
• Seals in piping, tanks, and filling machines

• Medical & Pharmaceutical

• Seals for medical devices (e.g., MRI machines, analyzers, pumps)
• Gaskets in drug delivery systems and respiratory equipment
• Seals for sterilizable (autoclavable) equipment

• Industrial Machinery

• Seals for pumps, compressors, and valves
• Gaskets for heat exchangers, HVAC systems, and plumbing fixtures

Silicone rubber gaskets provide a reliable and long-lasting seal in the most challenging conditions. Their outstanding resistance to extreme temperatures, environmental degradation, and compression set makes them a superior choice.

Technical specifications