--- product_id: 56802195 title: "Buyers Products HBF12P DC Hydraulic Power Unit Poly Breather Cap, Free Flow Ventilator for Reservoir, Oil-Resistant, 3/4 NPT" brand: "buyers products company" price: "$21.99" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/56802195-buyers-products-hbf12p-dc-hydraulic-power-unit-poly-breather-cap store_origin: US region: United States of America --- # 3/4 NPT thread size for secure fit Filters particles as small as 40 microns Oil-resistant poly breather cap Buyers Products HBF12P DC Hydraulic Power Unit Poly Breather Cap, Free Flow Ventilator for Reservoir, Oil-Resistant, 3/4 NPT **Brand:** buyers products company **Price:** $21.99 **Availability:** ✅ In Stock ## Summary > 🌟 Keep your hydraulics breathing clean and running mean! ## Quick Answers - **What is this?** Buyers Products HBF12P DC Hydraulic Power Unit Poly Breather Cap, Free Flow Ventilator for Reservoir, Oil-Resistant, 3/4 NPT by buyers products company - **How much does it cost?** $21.99 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/56802195-buyers-products-hbf12p-dc-hydraulic-power-unit-poly-breather-cap) ## Best For - buyers products company enthusiasts ## Why This Product - Trusted buyers products company brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Resist:** Durable oil-resistant poly material stands up to harsh chemical and coolant environments. - • **Compact Powerhouse:** Sleek 2x2 inch design fits seamlessly without bulk, perfect for modern hydraulic setups. - • **Micron-Level Defense:** Large filter elements trap dust and dirt particles down to 40 microns, protecting your system. - • **Breathe Easy, Work Hard:** Advanced free-flow ventilator design maintains clean airflow, preventing contamination. - • **Precision Fit, Zero Leaks:** 3/4 NPT threading ensures a tight, reliable seal for your hydraulic reservoirs. ## Overview The Buyers Products HBF12P is a compact, oil-resistant poly breather cap with a 3/4 NPT thread, designed to provide free airflow while filtering out dust and dirt particles as small as 40 microns. Ideal for hydraulic tanks and reservoirs, it ensures contamination-free operation and durability in demanding environments. ## Description The Breather Cap from Buyers Products acts as a ventilator to provide a free flow of clean air into your reservoir. It features oil-resistant filter elements that keep out dirt and dust particles as small as 40 microns. Breather cap sizing ranges from 1/8 in. NPT to 1 in. NPT. ## Features - Provides free flow of clean air into hydraulic fluid, oil, chemical, and coolant tanks or reservoirs. - Large, oil-resistant filter elements dirt and dust particles as small as 40 micron. - Commonly used for hydraulic tanks and hydraulic reservoirs ## Technical Specifications | Specification | Value | |---------------|-------| | Size | 3/4 NPT Poly | | Material | Plastic | | Brand | Buyers Products Company | | Color | Black | | Item dimensions L x W x H | 2 x 2 x 2 inches | | Connector Type | Cap | | Thread Size | 3/4 | | Exterior Finish | Aluminum | | Thread Type | NPT | | Item Weight | 0.01 Pounds | | Number of Pieces | 1 | | Manufacturer | Buyers Products | | UPC | 724920064484 | | Part Number | HBF12P | | Item Weight | 0.16 ounces | | Product Dimensions | 2 x 2 x 2 inches | | Item model number | HBF12P | | Style | Modern | | Item Package Quantity | 1 | | Included Components | Breather Cap | | Batteries Included? | No | | Batteries Required? | No | | Warranty Description | 1 Year | ## Product Details - **Size:** 3/4 NPT Poly - **Material:** Plastic - **Brand:** Buyers Products Company - **Color:** Black - **Item dimensions L x W x H:** 2 x 2 x 2 inches - **Connector Type:** Cap - **Thread Size:** 3/4 - **Exterior Finish:** Aluminum - **Thread Type:** NPT - **Item Weight:** 0.01 Pounds ## Images ![Buyers Products HBF12P DC Hydraulic Power Unit Poly Breather Cap, Free Flow Ventilator for Reservoir, Oil-Resistant, 3/4 NPT - Image 1](https://m.media-amazon.com/images/I/61J-RjppH7L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What size thread is this cap !** A: This would have 1" NPT threads. **Q: Could I use this to cap the air vent in an rv water tank? Need air in, but need to keep bugs and dirt out.** A: Part# HBF12P can be used on 3/4" NPT ports. **Q: Does this allow air out?** A: The HBF12P allows clean air to flow into your reservoir to prevent a vacuum from forming. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works as expected *by J***H on January 14, 2025* I bought this to vent a 55 gallon fuel drum. The item arrived on time and in good condition. The item works as expected. I feel like this is a good product at a reasonable price. ### ⭐⭐⭐⭐⭐ Excellent Product *by C***X on March 13, 2025* Excellent product, works as advertised. ### ⭐⭐⭐⭐⭐ The product works fine *by G***A on December 14, 2024* I needed for my truck hydraulic reservoir a vented cup and this product works great and the size is 1.25 diameter. ## Frequently Bought Together - Buyers Products HBF12P DC Hydraulic Power Unit Poly Breather Cap, Free Flow Ventilator for Reservoir, Oil-Resistant, 3/4 NPT - DOGNNAK Dump Cap Breather W/Dipstick Replacement - Automotive Hydraulic System - Red - 1 Speed - Dehumidifier - HBF12P 3/4 NPT Hydraulic Power Unit Poly Breather Cap,Fit For Hydraulic Tanks And Hydraulic Reservoirs --- ## 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.us/products/56802195-buyers-products-hbf12p-dc-hydraulic-power-unit-poly-breather-cap](https://www.desertcart.us/products/56802195-buyers-products-hbf12p-dc-hydraulic-power-unit-poly-breather-cap) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-09*