Gulf uses global benchmarks, AS568 and ISO3601 O-rings, for sealing accuracy. This offers you tightly controlled inside diameters, cross-sections, and tolerances for consistent performance in any application. AS568 inch sizes range from 0.029 to 26 in., and ISO-3601 metric sizes span 0.74 and 658.88 mm, These ranges give engineers a reliable foundation for demanding environments including high pressure, temperature, chemical, and more.

We help you go beyond standard sizing. Whether you’re designing to AS568, ISO-3601, or need a custom material, durometer, or geometry, our team of O-ring engineers outperform typical off-the-shelf options. If your next project requires tighter tolerances, longer life, or tailored material compatibility, send us your requirements and we’ll build the exact O-ring your application needs.

Manufacturing with Gulf begins with collaboration. Every project starts with a detailed consultation to understand your product’s requirements, performance goals, and operating environment. From there, our engineering solutions team can cost-effectively concept, test, and validate multi-element component designs within hours or days.

After approval, components move into full-scale production. Gulf’s vertically integrated process includes precision molding and overmolding, compounding and mixing, assembly and sub-assembly, and ISO Class 7 cleanroom manufacturing for medical-grade applications.

Each part undergoes rigorous functional and performance testing such as tensile, tear, and stress-relaxation analysis within our in-house metrology and quality labs (TS 16149 & ISO 9001 certified). Backed by ISO-certified systems, ISO 13485 compliance, and more than 100 years of combined engineering experience, Gulf transforms complex ideas into reliable, production-ready components faster, smarter, and more cost-effectively than other manufacturers.