Shop for X-ray Detectable UHMW Rod. Polystone® M XDT is an FDA compliant detectable UHMW designed to be visible to X-ray inspection technology. It has excellent impact and wear resistance, and low sliding properties for food and beverage processing. The Polystone® XDT UHMW rods are all considered make to order items. Please contact us for accurate availability, minimum quantity amounts, and pricing. Can’t find what you need? Get a quote.