






🖊️ Write Boldly, Rain or Shine — Never Miss a Note!
The Rite in the Rain All-Weather Pen Refill (No. 37R) features a pressurized cartridge and proprietary ink that writes through water, grease, and mud without smearing. It performs reliably in extreme temperatures from -30°F to 250°F and underwater up to 35 feet. Designed with a precision tip to maintain ink flow in harsh conditions, it fits all Rite in the Rain pens, making it the ultimate refill for professionals who demand durability and performance in any environment.






| Manufacturer | Rite In The Rain |
| Part Number | 37R |
| Item Weight | 0.16 ounces |
| Product Dimensions | 2.25 x 6.8 x 0.3 inches |
| Item model number | 37R |
| Is Discontinued By Manufacturer | No |
| Size | 3.5 x 0.187 x 0.25 |
| Color | Black Ink |
| Style | Pen Refill |
| Material | Metal |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Tool Tip Description | Medium |
| Special Features | Manual |
| Included Components | Rite in the Rain All-Weather Pen Refill - Black Ink - (No. 37R) |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | All merchandise is guaranteed against manufacturing defects. If you have a defective product, please contact customer service for return instructions. |
S**D
Works
Fit my pen and works well
C**H
It’s Rite-In-The-Rain
Rite-In-The-Rain is good stuff.A little expensive for everyday use in industry but I stick with it because I’m outside in all kinds of weather and it just works.The red is a nice, visible shade of red for when you want or need a red pen. It fits seamlessly in a Gerber Impromptu pen that has seen some hard use over the years. The point is fine for those of us who tend to write small sometimes, and it seems to be flowing just fine on day one.If you want a red, pressurized refill for any one any will take Rite-In-The-Rain this is a good choice.
A**Y
I won’t use any other brand on-duty
I’ve had my Gerber tactical pen for over 10 years and have only had to refill the cartridge a handful of times with Rite-in-Rain pen refills. The ink quality is outstanding, and the value for what you get is unbeatable. These refills have proven to be incredibly durable and reliable, even in tough conditions. I will continue buying this brand for the rest of my law enforcement career. Highly recommended for anyone needing dependable writing tools.
J**E
Great product
Very impressed with how this item is keeping up with my work load
P**Y
Do you write in the rain?
Truth is I don't care. Some time ago I bought that fancy Gerber pen. The one with the glass breaker tip on it. It uses these inserts, so this was a replacement for the original and I have to say, it produces smooth consistent fine ink. It's a good pen. Regardless of what pen you're putting this into, assuming it's the correct size, it writes well and lasts quite a while. The writing in the rain claims haven't been tested but that's not why I bought it. Like I said, it's a good pen.
W**T
Rites great. Somewhat purplish or darkish red.
Compared to e.g. my Jetstream 3, which has a bright pure red refill, the color of this one is somewhat darker and muted. Not bad at all. Probably this red color is more legible, which, after all, is the name of the game for Rite in the Rain. And it writes without any issues at all, leaving a rich, clear line.
P**A
Amazing Amazon Experience
Great price and value.
A**R
Great
It's a refill and it does its job. Not much to say
Trustpilot
2 weeks ago
1 month ago