If you have Navtec rod rigging and are concerned about the condition of your rod or turnbuckles, Ronstans new Sealoc turnbuckles can be used as replacements. Navtec Sales Manager, Beau LeBlanc, says most rod rigging failures happen at the heads of the rod. How long your rod heads last, says LeBlanc, depends on how often your rig is stressed. As a rule, 40,000 miles of sailing warrants the replacement of standing rigging. A boat thats raced hard and stored with the rig down should be OK for 8 to 10 years, but older rigs, particularly those left up year-round should be inspected. The heads, which are formed by pressing cold rod into a die, can be re-headed by cutting off the old heads and pressing the new ends, which must be done when replacing turnbuckles. Your rigger must use a Navtec die because manufacturers have proprietary dies that fit only their hardware. To make Sealoc turnbuckles match the Navtec rod, Ronstan uses Navtec end caps and can provide longer threads to fit the shorter cut rod.