RH6250-40YH Medical Grade Liquid Silicone Rubber is a high-performance platinum-cured silicone material specially developed for manufacturing scuba diving mouthpieces and breathing accessories. The material provides an ideal balance of comfort, durability, and safety, ensuring reliable performance in demanding underwater environments.

Scuba diving mouthpieces require materials that can withstand continuous biting, saltwater exposure, and long-term use. RH6250-40YH offers excellent elasticity, tear resistance, and fatigue resistance, making it highly suitable for mouthpiece applications where both flexibility and strength are critical.

With a Shore A hardness of approximately 40, this liquid silicone rubber provides a comfortable biting experience while maintaining sufficient structural strength to prevent deformation during prolonged use. The material is also highly resistant to seawater, UV exposure, and aging, ensuring long service life even in harsh marine conditions.

In addition, RH6250-40YH features low odor, high purity, and excellent biocompatibility, making it safe for prolonged oral contact. Its stable performance in LSR injection molding allows manufacturers to produce mouthpieces with smooth surfaces, ergonomic designs, and consistent quality.

Key Features

• Medical grade platinum-cured liquid silicone rubber

• Comfortable hardness for prolonged oral use

• Excellent tear resistance and bite resistance

• Resistant to seawater, UV, and aging

• High elasticity and fatigue resistance

• Low odor and suitable for oral contact

Typical Technical Data

Typical Applications

RH6250-40YH is ideal for manufacturing:

• Scuba diving mouthpieces

• Snorkeling mouthpieces

• Breathing regulator silicone parts

• Marine-grade silicone components

• Oral-contact silicone accessories

Product Advantages

• Comfortable and flexible for long-term use

• High durability and resistance to biting

• Excellent resistance to seawater and UV exposure

• Stable molding performance for precision products

• Safe for prolonged oral contact

About Ruihe New Material

Guangzhou Ruihe New Material Technology Co., Ltd specializes in the research, development, and production of liquid silicone rubber (LSR) and solid silicone rubber (HCR) materials. Our products are widely used in medical devices, baby care products, personal care, marine equipment, and industrial applications.

With advanced production technology and strict quality control systems, Ruihe provides high-performance silicone materials and customized solutions for customers worldwide.

FAQ – Medical Grade Liquid Silicone Rubber

Is liquid silicone rubber safe for scuba diving mouthpieces?

Yes, medical grade liquid silicone rubber is safe for oral contact due to its high purity, low odor, and biocompatibility, making it suitable for mouthpiece applications.

Why is silicone used for diving mouthpieces?

Silicone provides excellent flexibility, comfort, and durability, allowing divers to bite comfortably while ensuring long-term performance in seawater environments.

Can LSR withstand seawater and UV exposure?

Yes, liquid silicone rubber offers excellent resistance to saltwater, UV radiation, and aging, making it ideal for marine applications.

What hardness is suitable for mouthpieces?

Silicone with Shore A hardness between 30 and 50 is commonly used for mouthpieces to ensure both comfort and durability. RH6250-40YH provides an optimal balance.

Related Products

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High-strength silicone for durable healthcare and personal care products.

Food Grade Liquid Silicone Rubber – 6250-30FV
Ideal for baby products and food-contact applications.

Food Grade Liquid Silicone Rubber – 6250-60FV
Heat-resistant silicone for kitchenware.

Packaging

• 20 kg pails

• 200 kg drums

Store in a cool and dry place away from sunlight. Shelf life is 12 months.

Contact Us

Guangzhou Ruihe New Material Technology Co., Ltd

Tel: 86 13421773611
Whatsapp / Wechat: 86 13421773611
Email: [email protected]

Guangzhou Ruihe New Material Technology Co., Ltd

Established in 2004, specializes in search, development, production, and distribution of environmentally-friendly silicone materials. Our headquarters is located in Huadu district, Guangzhou, China. Our products are widely used in all kinds of industries, such as medical, electronics, telecommunication, aeronautics, astronautics, automobile, textile, mechanics, sports and daily necessities. Through the 18 years, we are now recognized as the famous leading silicone rubber manufacturer.

Rui-He has more than 1,000 types of silicone rubber. Each day we produce 50 tones of silicone rubber. We are generally sorted as LSR liquid silicone rubber, solid silicone rubber, HTV silicone rubber, RTV-2 molding silicone rubber, precipitation silicone rubber, injection molding silicone rubber, flame retardant silicone rubber, high temperature silicone rubber, electrical insulating silicone rubber, potting silicone rubber, medical silicone rubber, and the silicone rubber for cable accessories, baby's products, kitchenware and diving tools, etc.

Rui-He also is committed to provide customers with the professional silicone rubber solutions. We keep working to improve crafts operations and innovations. Secured access to high-grade environmentally-friendly silicone rubber is the way we work to achieve this.

Quality assurance is the key to enterprise survival and its development, We always adhere to the “reputation first, good quality, high-efficiency, and customer first” principal to all customers with the best products and services. Rui-He always focuses on the quality control and development of our product. Each batch of silicone rubber must be tested by our safe quality examination system. Rui-He has passed the quality certification of IS09001:2016, RoHS, REACH, FDA, PAHS. On the other hand, our annual output is more than 30,000 tons. With stable production and stable quality, our product sales network has been all over the country and with a good reputation.

Our mission is to build a centennial enterprise with strong international competitiveness and vitality. With the diversity of product and excellent service, Rui-He looks forward to cooperating with friends of all walks of life to create a bright future. Rui-He is deeply welcome to all the customers come to visit our factory. We hope Rui-He can have a win-win business relationship with each other.

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