HydraPak 42mm Filter Cap - Water Filtration Accessory - Fast Flow - Perfect for Hiking, Endurance Sports, Camping, Travel, and Emergency Preparedness
Details
- MaterialPP/POM EPDM
- Product Dimensions1.65"D x x
- Item Weight0.01 Pounds
- External Testing CertificationNSF
- BrandHydraPak
Description
💦 Stay ahead of the pack with the fastest, cleanest sip anywhere!
- MILITARY GRADE PURITY - Eliminates 99.9999% of bacteria, 99.999% parasitic cysts, and microplastics for water you can trust anywhere.
- ONE HANDED CONVENIENCE - Ergonomic high-flow nozzle with dust cover lets you drink and lock with a single hand—perfect for active lifestyles.
- SEAMLESS COMPATIBILITY - Fits all 42mm HydraPak bottles including Seekers and Flux—upgrade your hydration system effortlessly.
- RAPID HYDRATION ON THE GO - Filters 1,500L of fresh water at a blazing >1 L/min flow rate—never wait to hydrate again.
- FEATHERWEIGHT SPACE SMART - At just 57 grams, this compact filter cap adds zero bulk—ideal for trailrunning, camping, and emergency kits.
The HydraPak 42mm Filter Cap is a lightweight, NSF-certified water filtration accessory designed for fast, reliable hydration in the wild. It filters over 1,500 liters of water at a rate exceeding 1 liter per minute, removing 99.9999% of bacteria, parasitic cysts, and microplastics. Compatible with all 42mm HydraPak bottles, it features a one-handed high-flow nozzle with a protective dust cover, making it the ultimate companion for hiking, endurance sports, camping, travel, and emergency preparedness.
Specifications
| Material | PP/POM, EPDM, Silicone, Hollow Fiber |
| Product Dimensions | 1.65"D x 1.65"W x 5.1"H |
| Item Weight | 0.01 Pounds |
| External Testing Certification | NSF |
| Brand | HydraPak |
| UPC | 834456003236 |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Manufacturer | Hydrapak |
| Part Number | HYF03N |
| Item Weight | 0.141 ounces |
| Country of Origin | China |
| Item model number | F03 |
| Size | 42mm |
| Color | Blue |
| Style | Potable Water Filter |
| Installation Method | Direct Attachment |
| Item Package Quantity | 1 |
| Flow Rate | 1 Liters Per Minute |
| Special Features | NSF certified |
| Included Components | 42mm Filter Cap |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Beyond Lifetime Warranty |
Reviews
T**S
Great flow
Easily my favorite backpacking water filtration system I’ve used to date. Flow is superior to sawyer and platypus. In fact it’s so fast that I have doubts it’s actually filtering anything, although Ive never been sick afterwards. Will be purchasing more.
P**Y
Remove film before use
I hadn’t used yet, but I did notice that the plastic film over filter isn’t so obvious, make sure you remove it before use!
E**D
As described
Works great!
K**Y
Works but overpriced.
It’s a good buy, and would give it 5 stars but with the price knocked off 1
J**W
It works!
Bought to pair with a collapsible water bottle for a trip to Mexico. Worked great, no stomach issues while drinking water from several sources.
J**N
Mtn water fountain
Have used these the last few years in the Colorado high country for filtering water. The hydrapak bags seem to be better than Sawyer bags. Fast flow. Have not had issues with clogging as long as you use decent water to start and are careful up front to avoid sediment.
D**M
great product and great price
love this product! bought to take on my long ultra-marathon trail runs. have run into a few incidents where I needed to refill while on the trail. such a game changer. would highly recommend if you are looking for another option to refill on the trail and keep fresh water.
B**
Worked great
Fit my 3 liter water bladder perfect.
Common Questions
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