From high-tensile bolts and studs to gaskets, O-rings, and custom seals, JOC delivers the small components that make big systems reliable. As a China manufacturer and supplier, we provide certified materials, controlled threads, and sealing solutions matched to pressure, temperature, and media. Browse our capability menu under service and submit your BOM via Contact Us.
What is the key to leak-free joints?
Compatibility and compression set. We align elastomer chemistry (NBR, FKM, EPDM, PTFE) to your fluids and temperatures; for fasteners, we control tensile class, coating, and lubrication to achieve target preload without galling.
How to choose the right fastener/seal?
Define pressure cycles, corrosion class, and assembly method. We’ll propose coatings (zinc-nickel, Dacromet), thread locking, and gasket geometry that keep maintenance simple. Need PPAP or lot traceability? We’ve got it—contact us through Contact Us.
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