3-PIECE FLEXIBLE COUPLING INSERT Brand new, flexible insert for a 3-piece flexible coupling. A complete 3-piece coupling consists of two coupling halves from compatible series and one corresponding flexible insert. The following series jaw coupling halves and inserts can be interchanged; L-90 with L-095 and L-099 with L-100. Interchangeable with Lovejoy and Martin brands.
item number: 1-3616-x buna-n insert for l-099 jaw coupling, what is its heat tolerance compared to urethane insert for l-099 coupling item number 1-3616-ur. this will be close to the block heat of a 14hp. cast iron engine.
A: The Buna-N (1-3422-X) temperature range is -40 to 212 degrees F. It has a high dampening capacity. The Urethane (1-3422-UR) temperature range is -30 to 160 degrees F with a low dampening capacity. The inserts for L-100/L-099 are the same dimensions, so they will work on the 1-3616-series.