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.

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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: wendy@ruihesilica.com