Precision elastomer O-ring designed for tight, leak-proof sealing in small-bore fluid and air connections.
The 15J077 O-Ring is a precision-engineered sealing component manufactured to exact tolerances for use in high-pressure pump and fluid-handling equipment. With an internal diameter of approximately 0.256″ and a cross-section dimension of roughly 0.25″, this O-ring provides reliable sealing performance where small-bore connections demand durability and leak-free operation.
| Feature | Details |
|---|---|
| Dimensions | ID ≈ 0.256″, cross-section ≈ 0.25″ |
| Material | High-quality elastomer to maintain seal under pressure |
| Sealing Function | Designed to prevent fluid or air leaks in compact connections |
| Application Fit | Used in tight-fit ports, fittings, and fluid circuits within Graco systems |
Prior to installation, relieve system pressure and clean the sealing groove or port thoroughly. Inspect mating surfaces for wear or damage. Lubricate the O-ring lightly if recommended for your application, then seat the O-ring evenly in its groove to avoid twisting or pinching. After assembly, verify the seal by pressurizing the system and checking for leaks. Periodic inspection is recommended, particularly in high-cycle or abrasive fluid systems, and replacement is advisable if the O-ring shows signs of flattening, cracking, or extrusion.
Using the authentic Graco 15J077 ensures correct dimension, material grade and tolerance compatibility within your system. Substitutes may appear to fit, but differences in cross-section, hardness or compound can lead to leaks, reduced pressure performance or shortened service life. Investing in the correct OEM part helps maintain system integrity, ensures reliable operation, and minimizes downtime.
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