The 4MJ-6MM W/WASHER &O-RING STR fitting by Fittings Unlimited Inc is specifically designed for applications requiring a 4mm connection with added sealing features. This fitting includes a washer and O-ring, ensuring a leak-proof seal that enhances system integrity. Constructed from high-quality materials, it is built to withstand various environmental conditions. Its compact design allows for easy installation in tight spaces, making it ideal for hydraulic and pneumatic systems. This fitting meets industry standards, ensuring compatibility with a wide range of applications.