--- product_id: 17977210 title: "Bung Cap 2\" with 3/4\" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) Fits Plastic 15, 30, 55 Gallon Drum," brand: "green goods" price: "77.54 DT" currency: TND in_stock: true reviews_count: 8 category: "Green Goods" url: https://www.desertcart.tn/products/17977210-bung-cap-2-with-3-4-knock-out-combo-2pc store_origin: TN region: Tunisia --- # Dual thread combo: Buttress & NPT Heat & weather resistant plastic Fits 15, 30 & 55 gal drums Bung Cap 2" with 3/4" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) Fits Plastic 15, 30, 55 Gallon Drum, **Brand:** green goods **Price:** 77.54 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Seal the deal with confidence—versatility and durability in one cap! ## Quick Answers - **What is this?** Bung Cap 2" with 3/4" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) Fits Plastic 15, 30, 55 Gallon Drum, by green goods - **How much does it cost?** 77.54 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/17977210-bung-cap-2-with-3-4-knock-out-combo-2pc) ## Best For - green goods enthusiasts ## Why This Product - Trusted green goods brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Thread Design:** Includes both buttress and NPT threads, cutting down on inventory needs and installation hassle. - • **Universal Drum Fit:** Seamlessly compatible with most US-made 15, 30, and 55-gallon plastic drums for ultimate versatility. - • **Certified Leak-Proof:** UN certified for secure, no-leak performance—perfect for safe storage and transport. - • **Cost & Labor Efficient:** Reduces material waste and labor time with a smart, long-lasting design that professionals trust. - • **Durable Weatherproof Build:** Crafted from premium plastic that withstands high heat and harsh outdoor conditions. ## Overview The Green Goods Bung Cap 2" with 3/4" Knock Out Combo 2pc is a high-quality, dual-threaded plastic cap designed to fit US-made 15, 30, and 55-gallon plastic drums. Certified for UN use, it guarantees leak-proof sealing and withstands extreme heat and weather conditions. Its combination of buttress and NPT threads offers unmatched versatility, reducing labor and material costs for professional-grade drum handling. ## Description These Greed Goods bung caps with ¾” knockout are extremely versatile and compatible with most US made 15g, 30g, and 55g drums. All caps are certified for use in UN certified drums to ensuring that you get the best quality product with no leakage. It can withstand high resistance to heat and severe weather conditions. Perfect for any emergency storage or transport, this bung cap offers long life as well as reduced labor and material costs! Review: These fit and sealed my blue Greif 55 gal. poly barrel - Purchased these Bung Cap 2" with 3/4" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) for my closed top blue poly 55 gal. drum. They came with one "fine thread" (NPT) and one "coarse thread" (buttress) bung cap. The brand name on my blue poly 55 gal. drum is "Greif" and it is made by US Plastic Corp. These 2" caps fit on the barrel great! The do not leak and come with new gaskets that seal correctly! They are just as described and seem to be quality replacement caps for my 55 gal. barrel. Being almost $5 apiece seemed a little steep, compared to other caps available on desertcart, but then I only had to buy two and not a large quantity. Few of the options for purchase of bung caps had the option of both thread sizes available with one purchase. So, since they fit and I didn't have to buy a large quantity of one thread size, the price is just "OK" in my opinion! If they were $1-$2 less expensive, it would not hurt my feelings at all though! If they also could be purchased in a quantity of 2 to 3 caps each, in both thread sizes, I would have probably purchased them. Review: Good replacement - Good replacement for the price. Fits well in our 55 gal drum. ## Features - Top-Quality Material: Constructed with durable plastic, ensuring resistance to high heat and severe weather conditions - Versatile Compatibility: Ideal for most US-made 15g, 30g, and 55g drums, providing a perfect fit for various plastic drum sizes - Certified for Safety: Approved for use in UN certified drums, ensuring no leakage and maintaining the best quality - Efficient Design: Features both buttress and NPT threads, reducing labor and material costs while offering long-lasting performance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B014JNFOWW | | Age Range Description | Kid | | Battery Description | Likely uses battery, but type not specified | | Best Sellers Rank | #28,984 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #61 in Drum & Pail Handling Equipment | | Brand Name | Green Goods | | Color | White | | Controller Type | Button Control | | Customer Reviews | 4.5 out of 5 stars 730 Reviews | | Display Type | digital | | Form Factor | Cap | | Indoor Outdoor Usage | Outdoor | | Is Assembly Required | No | | Item Weight | 0.1 Kilograms | | Manufacturer | Drums, Totes & Accessories | | Manufacturer Part Number | PPA-57-B-5,PPNPS | | Material Type | Plastic | | Model Number | PPA-57-B-5,PPNPS | | Number of Players | 1 | | Operation Mode | Manual | | Power Source | Battery Powered | | Set Name | 2 | | UPC | 637262982357 | | Unit Count | 2.0 Count | ## Images ![Bung Cap 2" with 3/4" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) Fits Plastic 15, 30, 55 Gallon Drum, - Image 1](https://m.media-amazon.com/images/I/51+oVTOa-KL.jpg) ## Questions & Answers **Q: I am measuring my current (broken) cap to be 2.75 inches- I assume that means this 2 inch cap will not fit?** A: The threaded portion is about 2-1/4" diameter and the top of the cap is 2-7/8" Diameter. The 2" refers to the clear passage of a pipe attached to the threaded portion. **Q: Is the 3/4 knock out threaded on bung cap?** A: Yes, 3/4 NPT, but the hole needs to be opened by drilling or cutting. **Q: what is this bung cap made of?** A: Our bung caps are... Plastic is Polypropylene (PP). Gaskets are EPDM. Thank you for your interest in our products. Poly Farm LLC **Q: do you carry just the washers?** A: No sorry. ## Customer Reviews ### ⭐⭐⭐⭐⭐ These fit and sealed my blue Greif 55 gal. poly barrel *by J***A on November 25, 2025* Purchased these Bung Cap 2" with 3/4" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) for my closed top blue poly 55 gal. drum. They came with one "fine thread" (NPT) and one "coarse thread" (buttress) bung cap. The brand name on my blue poly 55 gal. drum is "Greif" and it is made by US Plastic Corp. These 2" caps fit on the barrel great! The do not leak and come with new gaskets that seal correctly! They are just as described and seem to be quality replacement caps for my 55 gal. barrel. Being almost $5 apiece seemed a little steep, compared to other caps available on Amazon, but then I only had to buy two and not a large quantity. Few of the options for purchase of bung caps had the option of both thread sizes available with one purchase. So, since they fit and I didn't have to buy a large quantity of one thread size, the price is just "OK" in my opinion! If they were $1-$2 less expensive, it would not hurt my feelings at all though! If they also could be purchased in a quantity of 2 to 3 caps each, in both thread sizes, I would have probably purchased them. ### ⭐⭐⭐⭐⭐ Good replacement *by V***T on July 3, 2025* Good replacement for the price. Fits well in our 55 gal drum. ### ⭐⭐⭐⭐⭐ Good Replacement Drum Caps/Plugs. *by J***. on July 4, 2025* Works great in my plastic 55 gallon drum. The fine thread cap was very hard to screw in. I thought I had it cross-threaded and removed it a couple of times to verify it wasn't cross-threading. I haven't checked the 3/4 inch threads but will soon. No issues installing the other cap/plug. ## Frequently Bought Together - Bung Cap 2" with 3/4" Knock Out Combo 2pc (1 Buttress Thread & 1 NPT Thread) Fits Plastic 15, 30, 55 Gallon Drum, - WINTOWIN Aluminum Drum Wrench, Drum Plug Bung Wrench for Opening 10 15 20 30 50 55 Gallon Drum, Fits 2 in and 3/4 in Bung Caps - Carvedexquisitely 2" Drum Faucet for 55 Gallon Drum,3/4 inch Brass Rain Barrel Spigot with EPDM Gasket --- ## 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.tn/products/17977210-bung-cap-2-with-3-4-knock-out-combo-2pc](https://www.desertcart.tn/products/17977210-bung-cap-2-with-3-4-knock-out-combo-2pc) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-23*