Durable Silicon Carbide Mechanical Seals Resistant to Hot Oil Wear301-15p. Mature Sealing Structure: 301 seals feature a mature design suitable for various media conditions. Wide Material Options: Rotary rings available in Carbon, SIC, TC; Secondary seals in NBR, EPDM. High Performance: Designed for high pressure, medium pressure, and high-speed applications. Mass Production Capability: Standard modular mass production ensures low cost and competitive pricing. Full Customization: Offers full customization, minor customization, and flexible customization options. 20+ Years R&D: Professional R&D team with over 20 years of experience in product research. Factory Direct Sales: Integrated production and sales factory with over 30 years of experience.