S-91339A170 1/2"-20 UL 50 Sealing Nuts

Key Features & Benefits at a Glance

• Leak-proof sealing performance with integrated silicone rubber seal that prevents fluid and gas ingress in demanding environments
• Exceptional pressure resistance up to 6000 psi for reliable operation in high-pressure hydraulic and pneumatic systems
• Wide temperature compatibility from -100°F to 400°F maintains seal integrity across extreme thermal conditions
• Corrosion-resistant construction using 18-8 stainless steel for long-lasting performance in harsh industrial settings
• Precision UNF fine threading with Class 2B fit ensures secure fastening and vibration resistance
• Third-party certified reliability through UL 50 certification for proven safety and performance standards
• Regulatory compliance assurance meeting both REACH and RoHS 3 environmental standards

Professional Applications & Engineering Value

This 18-8 stainless steel sealing nut delivers critical leak prevention in industrial applications where pressure integrity is paramount. The silicone rubber sealing element maintains flexibility across extreme temperature ranges from -100°F to 400°F, preventing seal brittleness in cold conditions and degradation under heat. The UNF fine thread configuration with Class 2B fit provides superior vibration resistance compared to coarse threads, making it ideal for hydraulic systems, pneumatic controls, and fluid handling equipment. With UL 50 certification and 6000 psi maximum pressure rating, this external hex sealing nut offers engineers a reliable solution for critical sealing applications where failure is not an option.

Specification Summary & Compliance

This 1/2"-20 UNF sealing nut features precision Class 2B thread fit according to Unified National Fine standards, ensuring consistent engagement and sealing performance. The component meets UL 50 certification requirements for safety and performance validation. Manufacturing and material compliance includes full adherence to REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives. Dimensional specifications include 3/4" width and 27/64" height with standard hex profile for compatibility with common wrenching tools.