If you’re a rubber scraper blade supplier, you know winter isn’t just a busy season for customers’ snow removal and pavement maintenance fleets—it’s also the time when improper storage can turn a perfectly good set of blades into cracked, warped, or useless pieces of rubber. Over the past 12 years in the industry, I’ve seen too many shop owners throw their old scraper blades into a corner of their warehouse in November, only to pull them out in March and find half the edges split or the rubber hardened so much it can’t do its job. That’s not just a waste of money—it’s a hassle that can cost you repeat business when your blades fail mid-job. Rubber Scraper Blade
Today, I’m breaking down the science behind rubber’s behavior in cold weather, and the storage steps we’ve tested in our own warehouse that keep scraper blades in peak condition all winter long. No fancy jargon, just practical, actionable tips that come from fixing customer mistakes and refining our own storage processes over decades.
First, let’s talk about why rubber scraper blades hate winter cold. Rubber is an elastomer—its molecular structure is made of long, cross-linked polymer chains that give it flexibility and resistance to wear. In warm temperatures, those chains are loose and mobile, so the rubber can bend without breaking and grip surfaces tightly. When temperatures drop below 40°F (4°C), those chains slow way down, tightens up, and becomes brittle. Expose a scraper blade to constant freezing, fluctuating cold, or pressure while it’s cold, and you’ll get cracks on the edge, warping from uneven contraction, or even full breakage when the blade hits a curb or a patch of ice. That’s why storing blades the wrong way in winter is a far bigger risk than any other season.
Our first rule? Never leave scraper blades in a cold, unconditioned space for more than a few days. I’ve seen customers store blades in unheated metal trailers, open bays, or even outdoor sheds that dip below freezing nightly, and within a week, those blades lose 20-30% of their impact resistance, per the ASTM D412 standard for elastomer tensile strength testing we use in our own quality checks. If you can, move your blades to a space that stays between 50°F and 70°F (10°C to 21°C)—even a heated garage or a temperature-controlled section of a warehouse works. If you’re storing blades at a customer’s yard, suggest they set up a temporary insulated shed for off-season storage; it’s a small investment that saves them from having to buy new blades every winter.
Next, how you position the blades matters more than you think. Most people stack scraper blades flat on top of each other, but that’s a mistake in cold weather. Here’s why: when rubber contracts in the cold, it doesn’t do so evenly. If you stack heavy blades flat, the weight of the top blades presses down on the ones below, forcing the rubber to compress at the bottom and stretch at the top. That uneven stress can create internal cracks that won’t show up until you run the blade on a plow. We tested this in 2018: we stacked two identical new blades, one flat, one hanging vertically, and left them in our 25°F (-4°C) warehouse for three months. The flat-stacked blade had a 1.5-inch crack running along the mounting hole; the vertically stored one had no damage at all.
So what’s the right position? Hang them. Use a sturdy rack with pegs that fit through the blade’s mounting holes, and space each blade at least 2 inches apart so air can circulate around them. If you don’t have a rack, lay them side by side on a flat surface, but never stack more than three high—and put a piece of plywood or foam board between each blade to distribute weight evenly. Also, avoid leaning them against a wall or metal surface. Metal conducts cold, so a blade leaning against a steel wall will freeze unevenly, leading to warping over time. We learned this the hard way in 2020 when a batch of blades leaned against a loading dock wall came back with permanent wavy edges; now we pad any surfaces blades touch with closed-cell foam.
Then there’s the issue of moisture. Winter air is dry, but when temperatures hover around freezing, condensation can form on cold rubber blades if you bring them from a cold space into a warm one rapidly. That moisture can seep into tiny cracks in the rubber’s surface, freeze, and expand, making those cracks bigger. We actually test for this by submerging blades in water after cold storage; blades with trapped moisture are 4 times more likely to split under impact. So before storing, make sure blades are completely dry. Wipe them down with a clean rag, and if they’re muddy from off-season use, let them air dry in a warm space for 24 hours before storing. If you’re storing them in a warehouse where humidity is low (under 50%), you don’t need to cover them—but if humidity is high, wrap them in a breathable plastic sheet, not an airtight bag. Airtight bags trap moisture, which is the enemy of rubber.
Another common mistake? Leaving hardware on the blades. Many suppliers ship scraper blades with bolts, brackets, or rubber edge strips attached, and customers leave them on during storage. In cold weather, metal hardware can stick to the rubber’s surface as the rubber contracts, creating a sticky, uneven bond that damages the edge when you try to remove the hardware later. We tell our own customers to remove all hardware before storage: wipe the metal parts with a light coating of petroleum jelly to prevent rust, and store them in a labeled plastic bag so you don’t lose them come plowing season. We’ve also seen blades crack right along the mounting hole when hardware is left on, because the metal pulls on the rubber as it contracts in cold.
What about damaged blades? It’s tempting to store a slightly worn blade “for next time,” but in winter, even a small nick can turn into a big crack. Cold rubber is 10 times more brittle than rubber at room temperature, so a tiny chip from last spring will expand into a 2-inch break in freezing conditions. If a blade has any wear over 10% (our quality check threshold), or any small cracks, replace it before storing it. Our sales team often helps customers audit their blades at the end of the plowing season; we don’t want them wasting money on storing a blade that won’t last a month of use.
We also have a few pro tips from our warehouse team that we’ve picked up over the years. First, avoid storing blades near heat sources, like furnaces or water heaters. That might seem counterintuitive, but heat (over 80°F/27°C) can cause rubber to degrade faster, and when you move the blade from a hot space to cold, rapid temperature changes cause contraction that leads to warping. Second, keep blades away from chemicals, even small amounts. Gasoline, antifreeze, and even some cleaning products can break down rubber’s cross-linked chains, making it brittle in cold weather. We store all our blades at least 10 feet away from our chemical storage area, and we tell customers to do the same. Third, rotate stored blades every 30 days if you’re storing them long-term—even in a good space, leaving them in the same position can cause slight deformation. Just hang them on a different peg, or flip them if you’re laying them flat.
I know a lot of small shop owners don’t have a temperature-controlled warehouse or a fancy storage rack. If that’s you, here’s a quick fix: wrap blades in thick moving blankets, and store them in a insulated trailer or shed. Add a small space heater (one that’s UL-listed for outdoor use) to keep the temperature above 40°F, even overnight. It’s a $50 investment that saves you from having to buy new blades every winter. We’ve had customers use this method for years, and their blade failure rate dropped by 60% last season, per their feedback.
As a rubber scraper blade supplier, our job isn’t just to sell you quality blades—it’s to make sure they work for you, year-round. Winter storage doesn’t have to be complicated; it just takes a little planning to protect the material that makes our blades durable and effective. If you’re not sure about your current storage routine, or you need help picking the right blades that hold up better in cold weather, our team is here to answer your questions. We’ve been in this business long enough to know that a good product paired with proper storage means happy customers, and that’s what we’re all about.
AutoSample Vial References
- ASTM International. Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension (ASTM D412-18), West Conshohocken, PA, 2018.
- Rubber Manufacturers Association. Storage Guidelines for Rubber Products, Washington, D.C., 2021.
- National Association of Pavement Maintenance Contractors. Winter Equipment Storage Best Practices, Alexandria, VA, 2022.
- International Organization for Standardization. Rubber Scraper Blades for Snow Removal Equipment (ISO 11600:2020), Geneva, Switzerland, 2020.
Rufluor Sealing Tech (Ningbo) Co., Ltd.
With abundant experience, we are one of the most professional rubber scraper blade manufacturers and suppliers in China. Please rest assured to wholesale high quality rubber scraper blade made in China here from our factory. We also accept customized orders.
Address: No.37, Shiji Road, Mazhu, Yuyao, Zhejiang
E-mail: andy@rufluor.com
WebSite: https://www.rufluor.com/
