Corning® Pyrex® Shock Absorbing Bumper Guards
By Corning![Corning® Pyrex® Shock Absorbing Bumper Guards](https://krackeler.com/timthumb.php?w=300&h=350&zc=3&src=%2Fgraphics%2F0001%2Fjpg%2F3066-lg.jpg)
This Pyrex® bumper guard is a polyethylene shock absorbing ring designed to reduce breakage of Pyrex® glass cylinders. For best results, slide the ring toward the top to absorb shock should the cylinder be accidentally upset.