15-silicone seals

Custom Silicone Seals Manufacturer in China

LegenDay is more than ten years of providing silicone seals useful in various industries such as pharmaceuticals, aerospace, aggressive chemical processing, and many more. Different grades, dimensions, and colors are customizable based on your requirements.

  • One-Stop Service
  • Full Certifications
  • Advanced Equipment
  • Short-Lead Time

Wide Options of Silicone Seals from LegenDay

Silicone seals have excellent resistance to heat, chemicals, aging, ozone, fungal growth, and water. It also has an outstanding compression set, tear strength, elongation, and tensile strength. Silicone seals become a common type of seal that is widely used in various fields of industry.

LegenDay had its pride in being a recognized leading innovator for sealing solutions for more than a decade. At LegenDay, we ensure that we are holding the highest standards of quality and tolerance when producing our silicone materials for seals.

Silicone Jar Gasket Seals
Silicone Jar Gasket Seals

A silicone sealing ring that is suitable for glass clip-top jars, canning jars, and mason jar lids. A silicone sealing ring that is smooth and soft and comes in different colors including custom colors.

Float Valve Silicone Seals
Float Valve Silicone Seals

Made of 100% organic silicone food-grade, has excellent strength and hardness that can withstand even high pressure. This float valve silicone seal has airtight and leak-proof features.

Silicone Rubber Door Strip Seals
Silicone Door Strip Seals

A multi-function seal trip that is easy to install and effective in preventing the bathroom from overflowing. Also suitable for sliding doors, glass doors, shower doors, and door bottoms.

Silicone Sealing Tape
Silicone Sealing Tape

A weather-stripping seal strip for glass doors, frameless sliding doors, aluminum windows, steel windows, plastic windows, and closets. It keeps away insects, dust, wind, and noise.

Silicone Inflatable Seals
Silicone Inflatable Seals

An inflatable silicone tube with a low-temperature performance, good physical stability, and high resistance that is widely used for home appliances or electronics products.

Silicone Seals for Swing Flip Bottles
Silicone Seals for Swing Flip Bottles

A flip bottle seal that is safe and durable to use, scald-proof, heat insulated, and BPA-free & odorless. This silicone seal for flip bottles is leak-proof seal that are reusable, easy to clean, and reliable.

6 Products Found.

Why Choose Silicone Seals from LegenDay


LegenDay silicone seals have superior quality. It is durable, leak-proof, airtight, thicker, and with a groove.


Silicone seals from LegenDay are excellent and a high-performance elastomer. It has exceptional low and high-temperature properties.


LegenDay silicone seals are designed to provide strong leak resistance to any substance or liquids. With a compact and tight design.

Custom Design
Custom Design

As long as you specifically tell us the groove size and working environment needs, LegenDay provides that custom design for you.

Silicone Seals Customization Option

With LegenDay, we can customize the different details for your silicone seals including:

  • Material
  • Color
  • Dimension
  • Grade
  • Packaging
Silicone Seals Customization Option
Silicone Seals to Suits Various Industry

Silicone Seals to Suits Various Industry

The LegenDay silicone seals are suitable to use in different industries such as:

  • Pharmaceuticals
  • Aerospace Applications
  • Aggressive Chemical Processing
  • Oil and Gas Recovery
  • Semiconductor Wafer Fabrication

Advantages of Silicone Seals

The silicone seals are designed to suit different applications. This design provides some advantages for silicone seals, including:

  • High density
  • Highly durable
  • Self-extinguishing
  • Excellent Weatherability
  • Good mechanical properties
  • Suitable for hygienic applications
Advantages of Silicone Seals

LegenDay - Your Reliable Provider of Silicone Seals


LegenDay is a leading provider of silicone seals that can be customizable to your specifications. We implemented strict quality control and rigorous production inspection to ensure quality and zero-defect seals.

LegenDay silicone seals are produced through our cutting-edge equipment, such as cut machines, mixing machines, and many more. These capabilities allow us to make precise dimensions, thicknesses and shapes needed for your die-cut silicone seals.

LegenDay Silicone Seals

Different Grades Classification of Silicone Seals
Different Grades Classification of Silicone Seals
  • Commercial Grade Silicone, Fluorosilicate Silicone, Reversion Grade Silicone
  • Specification Grade Silicone, Medical Grade Silicone, High Strength Silicone
  • Fiberglass Reinforced Silicone, FDA Grade Silicone, Low-Temperature Silicone Grade
  • Electrically Conductive Silicone, Extreme Low-Temperature Grade Silicone
  • Medium Strength Silicone, Translucent Grade Silicone
Custom Silicone Seals Cutting
Custom Silicone Seals Cutting

LegenDay has an innovative production cutting process such as:

    • Die Cut
    • Water Jet Cut
    • Laser Cut
    • Lathe Cut
    • Kiss Cut

Why LegenDay is Trusted by More Than 1000 Clients


For custom silicone seals, we have the following abilities, capabilities, and personnel.

  • Customize silicone grade for various application
  • Quick mold sampling and opening, Own mould workshop
  • Technical R&D Professionals
  • QC team Professionals
  • 2D & 3D drawing
Professional Service
Professional Service

LegenDay mastered the advanced manufacturing technology for silicone seals. We have the following professional services that help us to meet the production efficiency and product quality.

  • Compression Molding
  • Liquid Injection Molding
  • Extrusion
  • Secondary Operation
  • Assembly Service
Strict Quality Control
Strict Quality Control

At LegenDay, we have a quality control system and we strictly follow system standards. We also have a centralized laboratory, testing instruments, and equipment.

  • Calibrated Central Laboratory
  • Full Set of Testers (IQC)
  • Complied with WCA, BSCI, ISO9001, and ISO14000
  • High Experienced QA Team
Your Trusted Manufacturer of Silicone Seals - LegenDay
Your Trusted Manufacturer of Silicone Seals - LegenDay

LegenDay has the capabilities on providing customization services of silicone seals products for our valued customers. Make LegenDay your partner for your silicone seals solutions to experience good customer service and fast delivery.

  • “When my orders arrived and I unbox all my silicone seals, I can say that LegenDay has the capacity of making perfect customized silicone seals according to customers’ requirements. Good Job LegenDay!”

  • “The LegenDay truly reflects its name from the word “Legendary”. Their customer service, product quality, and customization function were legendary!”

  • “LegenDay’s pre-sales service was excellent. And one of the great things is we had received our thousand silicone seal orders earlier than the expected date of arrival.”

What is the commercial grade for silicone seals?

Commercial silicone seals grade is around 30 to 80 Durometer

What does the silicone seals use for?

Seals that are made of silicone are usually used as seals for construction industry doors, seals for HVAC systems, seals for food containers or bottles, and medical containers.

Are silicone seals have the same quality as rubber seals?

Silicone material has excellent resistance to UV and weathering, it is usually used and found in various outdoor applications like window and door seals. While natural rubbers do not have resistance same as silicone. That’s why silicone is a better option if some element involves in your sealing applications.

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