Enviro-Equipment 1/8" x 1/4" LDPE Tubing 1/8" x 1/4" Low Density Polyethylene Tubing is typically used as down-well peristaltic pump tubing. Material Low Density Polyethylene SKU LDPE-1814-500 $75.99 Select product 1/8 x 1/4 IN. LDPE Tubing, 500 ft roll Quantity