--- product_id: 16490670 title: "20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers" brand: "sealer sales" price: "7276072₫" currency: VND in_stock: true reviews_count: 9 category: "Sealer Sales" url: https://www.desertcart.vn/products/16490670-20w-direct-heat-clamshell-sealer-kf-772dh-with-hi-lo store_origin: VN region: Vietnam --- # 20W power for fast sealing Dual voltage 110-240V global use Dual temp: 356°F & 410°F 20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers **Brand:** sealer sales **Price:** 7276072₫ **Availability:** ✅ In Stock ## Summary > 🔥 Seal it fast, seal it right — lock in freshness and trust every time! ## Quick Answers - **What is this?** 20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers by sealer sales - **How much does it cost?** 7276072₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/16490670-20w-direct-heat-clamshell-sealer-kf-772dh-with-hi-lo) ## Best For - sealer sales enthusiasts ## Why This Product - Trusted sealer sales brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Global Ready Power:** Dual voltage compatibility ensures reliable operation anywhere you take your business. - • **Custom Heat Control:** Dual temperature settings adapt seamlessly to thin or thick plastics for flawless seals. - • **Anti-Theft Assurance:** Creates tamper-evident seals that protect your products and boost customer trust. - • **Versatile Material Mastery:** Seals a wide range of plastics including rPET, OPS, PSP, PVC, and EPS with professional-grade strength. - • **Effortless Precision Sealing:** Lightweight handheld design for quick, secure clamshell locks in seconds. ## Overview The 20W KF-772DH Direct Heat Clamshell Sealer is a lightweight, handheld device designed for rapid, secure spot welding of plastic clamshell and blister packages. Featuring dual temperature settings (356°F and 410°F) and dual voltage compatibility (110-240V), it delivers professional-grade seals on a variety of materials including rPET, OPS, PSP, PVC, and EPS. Ideal for food, retail, and boutique businesses, it prevents tampering and enhances product presentation with fast, firm, and tamper-evident seals. ## Description Hand held clamshell sealer is good for spot welding clam shell plastic packages used in food packaging or retail business with its steady fast and clean operation. It serves a variety of bakery, deli, pharmacy, boutique stores, restaurant, coffee shop, food take-out and fast food industry. In addition, by sealing the clamshell, it prevents shoplifters from opening retail plastic package and therefore anti-theft. HOW DOES IT WORK? The Clam Shell Sealer comes with two heated 0.19" wide and 0.40" long serrated jaws and works like a pair of plyer. It has two temperature settings: 180 & 210 degree C (356 & 410 degree F). Simply set the switch to HI or LO and let the sealer reach its desired temperature. Place the clamshell in between the jaws and press down to form the welds. Handle remains cool during operation. WHAT TYPE OF SEAL THE SEALER MAKES? With the heat and pressure, the heated jaw heads press against each other and quickly forms a spot weld. The spot weld is a serrated rectangular in shape with 0.19 in. W and 0.40 in. L. The clipping time is controlled by hand. 2ND REINFORCE WELD FOR LONG FLANGE If the flange to seal >= 1" from the edge, then a second reinforcement weld (through hole) will be created. The reinforcement weld is about 0.19"L x 0.12"W in size and measured 0.80" center-to-center from the first weld. (Approx. 0.94" edge-to-edge) DUAL VOLTAGES The sealer can be used in dual voltage range of 100-240V accepting two-pronged power cord and this makes it truly convenient for operation around the world. SPECIFICATIONS: POWER SUPPLY: 20W AC 110/240V 50/60 Hz TEMPERATURE SETTINGS: HI - 410F, LO - 356F EFFECTIVE WELDING AREA: 0.40" X 0.19" SERRATED MATERIALS: This held clamshell sealer is ideal for sealing poly packing cases such as clam shell and other similar types of containers. Review: Fits description perfectly - Perfect to close my cake containers. The container rips apart at the area that is sealed which guarantees that my product can not be tempered when sealed. It's super easy to use and seals quickly. I definitely recommend 👌 Review: easy to use - Works really well with both thin plastic and thick. I just adjust the setting and use as needed. So much better and easier to use instead of plastic tabs that don't stick. This changed my packaging to a professional level. ## Features - EASY TO OPERATE: Lightweight. Set the temperature, place the clamshell in between and press down - FAST AND FIRM: Forms a tight spot weld to firmly lock down clam shell packages, all within seconds - DUAL TEMPERATURE: 2 temperatures (180 and 210 degree C or 356 and 410 degree F) setting - DUAL VOLTAGES: Two-pronged power supply of dual world voltage 110-240V with 5-1/2 ft. cord - BEYOND CLAMSHELL: Suitable for sealing thicker materials and rPET, OPS, PSP, PVC, and EPS ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0081HTXGG | | Best Sellers Rank | #202,600 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #169 in Commercial Bag Sealers | | Brand | Sealer Sales | | Brand Name | Sealer Sales | | Color | Yellow | | Customer Reviews | 4.5 out of 5 stars 114 Reviews | | Included Components | Storage | | Item Weight | 0.01 Ounces | | Manufacturer | SEALER SALES | | Material | Polyvinyl Chloride | | Model Number | KF-772DH | | Operation Mode | Manual | | Part Number | KF-772DH | | Power Source | Corded Electric | | Unit Count | 1.0 Count | | Voltage | 240 Volts | | Warranty Description | No Warranty | | Wattage | 20.00 | ## Product Details - **Brand:** Sealer Sales - **Color:** Yellow - **Item Weight:** 0.01 Ounces - **Material:** Polyvinyl Chloride - **Power Source:** Corded Electric ## Images ![20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers - Image 1](https://m.media-amazon.com/images/I/71M+Ba+61+L.jpg) ![20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers - Image 2](https://m.media-amazon.com/images/I/816jESVg3AL.jpg) ![20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers - Image 3](https://m.media-amazon.com/images/I/61Bx4zf0VtL.jpg) ![20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers - Image 4](https://m.media-amazon.com/images/I/81AA+dmS39L.jpg) ![20W Direct Heat Clamshell Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Blister and Food Containers - Image 5](https://m.media-amazon.com/images/I/71ncs-GB2zL.jpg) ## Questions & Answers **Q: Will this sealer work on rpet clear clamshells? this is not pvc.** A: Yes, the sealer works for most clam shell packages. **Q: I need to find a balance in preventing theft of product and limiting consumer packaging frustration. How much effort is needed to break one seal?** A: Clamshell packaging is an anti-theft mechanism itself. Even though it's a lot harder to shoplift what's encased in plastic sheet, and even if you do, the number of items thief can pocket is significantly reduced. But shoplifters still try. Retail theft or shoplifting prevention can be a big problem. So to add a extra weld or two might give owners some relief. To balance out consumer frustration with clamshell, you really just need one good weld rather than several okay welds. Test out your sealer at HI temp and try a few materials to get that good weld and stick to the setting for your production run. **Q: Will this glue two pieces of polyethilene tarp?** A: For polyethylene tarp, you can use the low temperature setting to get started. When the jaws are pressed down, it will press the tarp and melt them together to form a nice serrated weld. You will probably need to weld in multiple places to for a nice stitch line to really bond well. The trick is to balance out the time and temperature. Essentially this tool is originally used to bond plastic clamshell package and as long as they are plastic, the sealer seems to work very well. We have put out extensive tutorial video on Youtube under the channel name - BestPolybag. There you can really learn how to use this sealer to achieve different tasks. **Q: Hi, what's the max thickness this can seal?** A: Andrew, thank you for asking this great question. To be honest, I were not even sure what the answer is. But I have taped a Q&A session Youtube video and you can search "clamshell sealer" from Youtube. SO from my experiment, I am able to achieve a maximum thickness of 49 mil (0.049 in.). But this is not to say that the sky is the limit. I have observed some interesting physics behind achieving the "max". The temperature and the clamping time are two reversing factors to seal thick materials and the cooling is necessary to achieve stronger bond. On one side, you are tempting to use hi-temp to burn through materials and this is the "magma", which is the molten plastics in between the jaws by sealer heat; but it also quickly melts the peripheral plastics and pushes out "lava". the lava just as in reality (Hawaii i.e.) can burns out heat dissipation paths. The result of this magma-lava effect is the material fallout or a sinkhole formed afterward. I want to do a followup video on this magma-lava physics to further explain this physics.So my conclusion of this experiment is to seal thicker materials ( I am talking about 40 mil range), you have to use LO-temp setting to get started and control how much time you will need, the shorter the better. Also cooling is important for thicker plastics sealing/welding. So with this LO-temp approach, you slowly produce the heat necessary to melt the plastics but also allow heat to dissipate quickly so the seal is still intact once everything cools down.I hope this info from my experiment helps. We also have a dedicated playlist on Youtube dedicated to this wonderful clamshell sealer, and you can watch all of the tutorials and experiment we conducted. We love to answer question like this so the answer can benefit the whole Amazon community. Thanks for this excellent question, great opportunity and glad we can help! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits description perfectly *by J***E on April 10, 2025* Perfect to close my cake containers. The container rips apart at the area that is sealed which guarantees that my product can not be tempered when sealed. It's super easy to use and seals quickly. I definitely recommend 👌 ### ⭐⭐⭐⭐⭐ easy to use *by J***N on June 22, 2023* Works really well with both thin plastic and thick. I just adjust the setting and use as needed. So much better and easier to use instead of plastic tabs that don't stick. This changed my packaging to a professional level. ### ⭐⭐⭐⭐⭐ Amazing! *by J***N on March 9, 2024* Worth the investment and works like a charm! Worth the money and seals great! ## Frequently Bought Together - 20W Handheld Direct Heat Sealer KF-772DH with Hi/Lo Temp Setting for Sealing Plastic Clamshell Packages and Food Containers - Tork Jumbo Toilet Paper Roll White T22, Universal, 2-ply, 12 x 1000', TJ0922A - Reli. 55-60 Gallon Trash Bags Heavy Duty | 150 Count | 50-60 Gallon | Large Black Garbage Bags | Made in USA --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/16490670-20w-direct-heat-clamshell-sealer-kf-772dh-with-hi-lo](https://www.desertcart.vn/products/16490670-20w-direct-heat-clamshell-sealer-kf-772dh-with-hi-lo) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*