Durastar's Plastic Combo Retainers are expertly engineered to streamline your hardware assembly process. By integrating the function of both a retainer and washer, this innovative component reduces part counts and simplifies installation—saving both time and cost.
Made from high-quality plastic, these retainers offer excellent resistance to corrosion, making them ideal for use in humid, chemical, or outdoor environments. Their lightweight yet rugged design ensures dependable performance without adding unnecessary weight to your application.
Whether you're working with casters, axles, or mobility hardware, Durastar Plastic Combo Retainers deliver secure fastening and long-term reliability. Trusted by OEMs and industry professionals, they are a practical and cost-effective choice for commercial and industrial settings.
Upgrade your hardware efficiency with Durastar's dual-purpose plastic combo retainers—where performance meets practicality in every application.
These calculators apply to any caster application—even if you’re browsing a different category. Use them to estimate load rating per caster, select wheel material, and estimate push/pull force. Expand any tool for full analysis + a share-ready spec line.
Engineering Tools Hub
All tools + dedicated pages (best for sharing and EEAT). Open hub
Load Calculator (dedicated)
Share this page when discussing load rating per caster. Open load tool
Wheel Diameter Calculator
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Failure Diagnosis Tool
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