Used on hemtt family (heavy expanded mobility tactical trucks); 2320-01-304-2277 and 2320-01-304-2278 pls (palletized loading system). the parts of the seal kit are: 1 o-ring p/n 12-916, 1 o-ring p/n 11-117, 1 o-ring p/n 11-119, 2 back up washers p/n 21-117, 2 back up washers p/n 21-119
